TY  - JOUR
AU  - Kasalović, Marijana P.
AU  - Jelača, Sanja
AU  - Maksimović-Ivanić, Danijela
AU  - Lađarević, Jelena
AU  - Radovanović, Lidija
AU  - Božić, Bojan
AU  - Mijatović, Sanja
AU  - Pantelić, Nebojša Đ.
AU  - Kaluđerović, Goran N.
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6760
AB  - Three new diphenyltin(IV) complexes, bis(3-(4-methyl-2-oxoquinolinyl-1(2H)-yl)propanoato)diphenyltin(IV)
(1), bis(2-(4-methyl-2-oxoquinolin-1(2H)-yl)ethanoato)diphenyltin(IV) (2), and bis(2-(4-hydroxy-2-oxoquinolin1(2H)-yl)ethanoato)diphenyltin(IV) (3), were synthesized and characterized by elemental microanalysis, FT-IR
spectroscopy, and multinuclear (
1
H, 13C and 119Sn) NMR spectroscopy. Crystal structure of ligand precursor,
2-(4-methyl-2-oxoquinolinyl-1-(2H)-yl)acetic acid (HL2), has been determined by X-ray diffraction studies.
Asymmetric bidentate coordination of the carboxylato ligands and skew trapezoidal structures are assumed for
the synthesized complexes. In vitro anticancer activity of the synthesized diphenyltin(IV) complexes was evaluated against three human: MCF-7 (breast adenocarcinoma), A375 (melanoma), HCT116 (colorectal carcinoma),
and three mouse tumor cell lines: 4T1 (breast carcinoma), B16 (melanoma), CT26 (colon carcinoma) using MTT
and CV assays. The IC50 values fall in the range from 0.1 to 3.7 μM. Flow cytometric analysis and fluorescent
microscopy suggest that complex 1 induces caspase-dependent apoptosis followed with strong blockade of cell
division in HCT116 cells. Since complex 1 showed ROS/RNS scavenging potential mentioned cytotoxicity was
not connected with oxidative stress.
PB  - Elsevier Inc.
T2  - Journal of Inorganic Biochemistry
T1  - Novel diphenyltin(IV) complexes with carboxylato N-functionalized 2-quinolone ligands: Synthesis, characterization and in vitro anticancer studies
SP  - 112399
VL  - 250
DO  - 10.1016/j.jinorgbio.2023.112399
ER  - 

@article{
author = "Kasalović, Marijana P. and Jelača, Sanja and Maksimović-Ivanić, Danijela and Lađarević, Jelena and Radovanović, Lidija and Božić, Bojan and Mijatović, Sanja and Pantelić, Nebojša Đ. and Kaluđerović, Goran N.",
year = "2024",
abstract = "Three new diphenyltin(IV) complexes, bis(3-(4-methyl-2-oxoquinolinyl-1(2H)-yl)propanoato)diphenyltin(IV)
(1), bis(2-(4-methyl-2-oxoquinolin-1(2H)-yl)ethanoato)diphenyltin(IV) (2), and bis(2-(4-hydroxy-2-oxoquinolin1(2H)-yl)ethanoato)diphenyltin(IV) (3), were synthesized and characterized by elemental microanalysis, FT-IR
spectroscopy, and multinuclear (
1
H, 13C and 119Sn) NMR spectroscopy. Crystal structure of ligand precursor,
2-(4-methyl-2-oxoquinolinyl-1-(2H)-yl)acetic acid (HL2), has been determined by X-ray diffraction studies.
Asymmetric bidentate coordination of the carboxylato ligands and skew trapezoidal structures are assumed for
the synthesized complexes. In vitro anticancer activity of the synthesized diphenyltin(IV) complexes was evaluated against three human: MCF-7 (breast adenocarcinoma), A375 (melanoma), HCT116 (colorectal carcinoma),
and three mouse tumor cell lines: 4T1 (breast carcinoma), B16 (melanoma), CT26 (colon carcinoma) using MTT
and CV assays. The IC50 values fall in the range from 0.1 to 3.7 μM. Flow cytometric analysis and fluorescent
microscopy suggest that complex 1 induces caspase-dependent apoptosis followed with strong blockade of cell
division in HCT116 cells. Since complex 1 showed ROS/RNS scavenging potential mentioned cytotoxicity was
not connected with oxidative stress.",
publisher = "Elsevier Inc.",
journal = "Journal of Inorganic Biochemistry",
title = "Novel diphenyltin(IV) complexes with carboxylato N-functionalized 2-quinolone ligands: Synthesis, characterization and in vitro anticancer studies",
pages = "112399",
volume = "250",
doi = "10.1016/j.jinorgbio.2023.112399"
}

Kasalović, M. P., Jelača, S., Maksimović-Ivanić, D., Lađarević, J., Radovanović, L., Božić, B., Mijatović, S., Pantelić, N. Đ.,& Kaluđerović, G. N.. (2024). Novel diphenyltin(IV) complexes with carboxylato N-functionalized 2-quinolone ligands: Synthesis, characterization and in vitro anticancer studies. in Journal of Inorganic Biochemistry
Elsevier Inc.., 250, 112399.
https://doi.org/10.1016/j.jinorgbio.2023.112399

Kasalović MP, Jelača S, Maksimović-Ivanić D, Lađarević J, Radovanović L, Božić B, Mijatović S, Pantelić NĐ, Kaluđerović GN. Novel diphenyltin(IV) complexes with carboxylato N-functionalized 2-quinolone ligands: Synthesis, characterization and in vitro anticancer studies. in Journal of Inorganic Biochemistry. 2024;250:112399.
doi:10.1016/j.jinorgbio.2023.112399 .

Kasalović, Marijana P., Jelača, Sanja, Maksimović-Ivanić, Danijela, Lađarević, Jelena, Radovanović, Lidija, Božić, Bojan, Mijatović, Sanja, Pantelić, Nebojša Đ., Kaluđerović, Goran N., "Novel diphenyltin(IV) complexes with carboxylato N-functionalized 2-quinolone ligands: Synthesis, characterization and in vitro anticancer studies" in Journal of Inorganic Biochemistry, 250 (2024):112399,
https://doi.org/10.1016/j.jinorgbio.2023.112399 . .

TY  - JOUR
AU  - Vidović, Dunja
AU  - Milošević, Nataša
AU  - Pavlović, Nebojša
AU  - Todorović, Nemanja
AU  - Čanji Panić, Jelena
AU  - Kovačević, Strahinja
AU  - Karadžić Banjac, Milica
AU  - Podunavac-Kuzmanović, Sanja
AU  - Banjac, Nebojša
AU  - Trišović, Nemanja
AU  - Božić, Bojan
AU  - Lalić-Popović, Mladena
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5262
AB  - Percutaneous permeation of twenty-four newly synthesized succinimide derivatives was evaluated using parallel artificial membrane permeability assay (PAMPA) with 70% silicone oil and 30% isopropyl myristate. Different online tools were applied for in silico predicting of their skin permeability. According to the in silico estimation of the transdermal permeation, all compounds are expected to have relatively good ability to permeate the skin, at pH=6. However, for two compounds containing carboxylic groups, the concentration in the acceptor compartment was undetectable indicating limited permeation at pH=7.4. Statistically significant association was found between in silico predicted logKp values by the PreADMET and SwissADME online tools and the percutaneous permeability estimated from the experimental results using the artificial membranes (adj. r2 = 0.371, p = 0.00158 and adj. r2=0.232, p = 0.0135, respectively). The association between permeation through artificial membranes and the calculated logP data was also statistically significant. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) took into account in silico logKp and calculated logP data. The ranking of the lipophilicity and skin permeability parameters was conducted with sum of ranking differences (SRD) analysis which was validated. Based on the obtained results, it is predicted that lipophilicity is a pivotal physico-chemical parameter of the passive permeation of succinimide derivatives through hydrophobic barriers such as the skin. © 2022 Elsevier B.V.
T2  - Journal of Molecular Structure
T1  - Predicting percutaneous permeation for new succinimide derivatives by in vitro and in silico models
SP  - 134516
VL  - 1274
DO  - 10.1016/j.molstruc.2022.134516
ER  - 

@article{
author = "Vidović, Dunja and Milošević, Nataša and Pavlović, Nebojša and Todorović, Nemanja and Čanji Panić, Jelena and Kovačević, Strahinja and Karadžić Banjac, Milica and Podunavac-Kuzmanović, Sanja and Banjac, Nebojša and Trišović, Nemanja and Božić, Bojan and Lalić-Popović, Mladena",
year = "2023",
abstract = "Percutaneous permeation of twenty-four newly synthesized succinimide derivatives was evaluated using parallel artificial membrane permeability assay (PAMPA) with 70% silicone oil and 30% isopropyl myristate. Different online tools were applied for in silico predicting of their skin permeability. According to the in silico estimation of the transdermal permeation, all compounds are expected to have relatively good ability to permeate the skin, at pH=6. However, for two compounds containing carboxylic groups, the concentration in the acceptor compartment was undetectable indicating limited permeation at pH=7.4. Statistically significant association was found between in silico predicted logKp values by the PreADMET and SwissADME online tools and the percutaneous permeability estimated from the experimental results using the artificial membranes (adj. r2 = 0.371, p = 0.00158 and adj. r2=0.232, p = 0.0135, respectively). The association between permeation through artificial membranes and the calculated logP data was also statistically significant. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) took into account in silico logKp and calculated logP data. The ranking of the lipophilicity and skin permeability parameters was conducted with sum of ranking differences (SRD) analysis which was validated. Based on the obtained results, it is predicted that lipophilicity is a pivotal physico-chemical parameter of the passive permeation of succinimide derivatives through hydrophobic barriers such as the skin. © 2022 Elsevier B.V.",
journal = "Journal of Molecular Structure",
title = "Predicting percutaneous permeation for new succinimide derivatives by in vitro and in silico models",
pages = "134516",
volume = "1274",
doi = "10.1016/j.molstruc.2022.134516"
}

Vidović, D., Milošević, N., Pavlović, N., Todorović, N., Čanji Panić, J., Kovačević, S., Karadžić Banjac, M., Podunavac-Kuzmanović, S., Banjac, N., Trišović, N., Božić, B.,& Lalić-Popović, M.. (2023). Predicting percutaneous permeation for new succinimide derivatives by in vitro and in silico models. in Journal of Molecular Structure, 1274, 134516.
https://doi.org/10.1016/j.molstruc.2022.134516

Vidović D, Milošević N, Pavlović N, Todorović N, Čanji Panić J, Kovačević S, Karadžić Banjac M, Podunavac-Kuzmanović S, Banjac N, Trišović N, Božić B, Lalić-Popović M. Predicting percutaneous permeation for new succinimide derivatives by in vitro and in silico models. in Journal of Molecular Structure. 2023;1274:134516.
doi:10.1016/j.molstruc.2022.134516 .

Vidović, Dunja, Milošević, Nataša, Pavlović, Nebojša, Todorović, Nemanja, Čanji Panić, Jelena, Kovačević, Strahinja, Karadžić Banjac, Milica, Podunavac-Kuzmanović, Sanja, Banjac, Nebojša, Trišović, Nemanja, Božić, Bojan, Lalić-Popović, Mladena, "Predicting percutaneous permeation for new succinimide derivatives by in vitro and in silico models" in Journal of Molecular Structure, 1274 (2023):134516,
https://doi.org/10.1016/j.molstruc.2022.134516 . .

TY  - JOUR
AU  - Lađarević, Jelena
AU  - Radovanović, Lidija
AU  - Božić, Bojan
AU  - Mašulović, Aleksandra
AU  - Lunić, Tanja
AU  - Radovanović, Željko
AU  - Rogan, Jelena
AU  - Mijin, Dušan
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6604
AB  - Two azo dye ligands, bearing different substituents (chlorine atom or methoxy group) in the para-position of the phenyl ring, were employed for the synthesis of two Cu(II) chelates. Full structural affirmation of complexes was assessed. X-ray diffraction measurements revealed that the coordination geometry for Cu atoms in both complexes is square-pyramidal with a ligand:metal ratio of 2:1 where dyes behave as monobasic bidentate ligands. Thermogravimetric analyses of the complexes and their starting dyes were performed to study their thermal stabilities and decomposition behavior confirming the thermal stability of both dyes and complexes. Antioxidative activity of the complexes has been assigned and compared with their parent ligands revealing that the presence of the electron–donor, methoxy group, in the phenyl ring, in both dye and complex, is responsible for the activity (IC50 values of 1.54 for the dye and 1.30 mM for the complex). It should be stated that the complexation of the methoxy-substituted dye leads to enhanced antioxidative activity concurrent to a standard antioxidant molecule of ascorbic acid, making this molecule a promising antioxidant agent. Docking study with vascular endothelial growth factor receptor 2 and Aurora kinase A proteins indicate that complexes exhibit higher binding affinities to proteins than the starting ligand dyes. The most promising structure exhibiting the best docking potential toward both proteins is the complex-bearing methoxy group. The presented results represent a promising start for further investigations of these compounds as potential therapeutic candidates for the treatment of various types of cancer.
PB  - John Wiley and Sons Ltd.
T2  - Applied Organometallic Chemistry
T1  - New copper (II) complexes derived from azo pyridone dyes: Structure characterization, thermal properties, and molecular docking studies
IS  - 10
SP  - e7219
VL  - 37
DO  - 10.1002/aoc.7219
ER  - 

@article{
author = "Lađarević, Jelena and Radovanović, Lidija and Božić, Bojan and Mašulović, Aleksandra and Lunić, Tanja and Radovanović, Željko and Rogan, Jelena and Mijin, Dušan",
year = "2023",
abstract = "Two azo dye ligands, bearing different substituents (chlorine atom or methoxy group) in the para-position of the phenyl ring, were employed for the synthesis of two Cu(II) chelates. Full structural affirmation of complexes was assessed. X-ray diffraction measurements revealed that the coordination geometry for Cu atoms in both complexes is square-pyramidal with a ligand:metal ratio of 2:1 where dyes behave as monobasic bidentate ligands. Thermogravimetric analyses of the complexes and their starting dyes were performed to study their thermal stabilities and decomposition behavior confirming the thermal stability of both dyes and complexes. Antioxidative activity of the complexes has been assigned and compared with their parent ligands revealing that the presence of the electron–donor, methoxy group, in the phenyl ring, in both dye and complex, is responsible for the activity (IC50 values of 1.54 for the dye and 1.30 mM for the complex). It should be stated that the complexation of the methoxy-substituted dye leads to enhanced antioxidative activity concurrent to a standard antioxidant molecule of ascorbic acid, making this molecule a promising antioxidant agent. Docking study with vascular endothelial growth factor receptor 2 and Aurora kinase A proteins indicate that complexes exhibit higher binding affinities to proteins than the starting ligand dyes. The most promising structure exhibiting the best docking potential toward both proteins is the complex-bearing methoxy group. The presented results represent a promising start for further investigations of these compounds as potential therapeutic candidates for the treatment of various types of cancer.",
publisher = "John Wiley and Sons Ltd.",
journal = "Applied Organometallic Chemistry",
title = "New copper (II) complexes derived from azo pyridone dyes: Structure characterization, thermal properties, and molecular docking studies",
number = "10",
pages = "e7219",
volume = "37",
doi = "10.1002/aoc.7219"
}

Lađarević, J., Radovanović, L., Božić, B., Mašulović, A., Lunić, T., Radovanović, Ž., Rogan, J.,& Mijin, D.. (2023). New copper (II) complexes derived from azo pyridone dyes: Structure characterization, thermal properties, and molecular docking studies. in Applied Organometallic Chemistry
John Wiley and Sons Ltd.., 37(10), e7219.
https://doi.org/10.1002/aoc.7219

Lađarević J, Radovanović L, Božić B, Mašulović A, Lunić T, Radovanović Ž, Rogan J, Mijin D. New copper (II) complexes derived from azo pyridone dyes: Structure characterization, thermal properties, and molecular docking studies. in Applied Organometallic Chemistry. 2023;37(10):e7219.
doi:10.1002/aoc.7219 .

Lađarević, Jelena, Radovanović, Lidija, Božić, Bojan, Mašulović, Aleksandra, Lunić, Tanja, Radovanović, Željko, Rogan, Jelena, Mijin, Dušan, "New copper (II) complexes derived from azo pyridone dyes: Structure characterization, thermal properties, and molecular docking studies" in Applied Organometallic Chemistry, 37, no. 10 (2023):e7219,
https://doi.org/10.1002/aoc.7219 . .

TY  - CONF
AU  - Kasalović, Marijana P.
AU  - Lađarević, Jelena
AU  - Božić, Bojan
AU  - Jevtić, Verica V.
AU  - Kaluđerović, Goran N.
AU  - Pantelić, Nebojša Đ.
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6776
AB  - U datom radu opisana je sinteza 2-(4-hidroksi-2-oksohinolinil)propanske kiseline i njenog kompleksa tributilkalaja(IV). Ligand prekursor je dobijen hidrolizom metil-estra sintetisanog u reakciji između 4-hidroksi-2-hinolona i metil-2-bromopropanoata. U reakciji deprotonovanog liganda i ekvimolarne količine Bu3SnCl dobijen je kompleks u obliku belog taloga. Sintetisana jedinjenja su okarakterisana standardnim analitičkim metodama. Ligand prekursor i odgovarajući kompleks tributilkalaja(IV) biće testirani na antitumorsku aktivnost prema raznim tumorskim ćelijskim linijama.
AB  - Synthesis of 2-(4-methyl-2-oxoquinolinyl)propanoic acid and its tributyltin(IV) complex has been performed. The ligand precursor has been obtained by the hydrolysis of methyl ester synthesized in the reaction between 4-hydroxy-2-quinolone and methyl 2- bromopropanoate. In the reaction of deprotonated ligand with equimolar amount of Bu3SnCl, the desired complex was precipitated as a white solid. The synthesized compounds have been characterized using standard analytical methods. The following research of ligand precursor and corresponding tributyltin(IV) complex will be focused on examining their antitumor activity against various cancer cell lines.
PB  - Beograd : Srpsko hemijsko društvo
C3  - Kratki izvodi radova ; Knjiga radova / 59. savetovanje Srpskog hemijskog društva, Novi Sad 1. i 2. jun 2023. godine
T1  - Sinteza i karakterizacija kompleksa tributilkalaja(IV) sa 2-(4- hidroksi-2-oksohinolinil)propanskom kiselinom
T1  - Synthesis and characterization of novel tributyltin(IV) complex with 2-(4-hydroxy-2-oxoquinolinyl)propanoic acid
SP  - 88
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6776
ER  - 

@conference{
author = "Kasalović, Marijana P. and Lađarević, Jelena and Božić, Bojan and Jevtić, Verica V. and Kaluđerović, Goran N. and Pantelić, Nebojša Đ.",
year = "2023",
abstract = "U datom radu opisana je sinteza 2-(4-hidroksi-2-oksohinolinil)propanske kiseline i njenog kompleksa tributilkalaja(IV). Ligand prekursor je dobijen hidrolizom metil-estra sintetisanog u reakciji između 4-hidroksi-2-hinolona i metil-2-bromopropanoata. U reakciji deprotonovanog liganda i ekvimolarne količine Bu3SnCl dobijen je kompleks u obliku belog taloga. Sintetisana jedinjenja su okarakterisana standardnim analitičkim metodama. Ligand prekursor i odgovarajući kompleks tributilkalaja(IV) biće testirani na antitumorsku aktivnost prema raznim tumorskim ćelijskim linijama., Synthesis of 2-(4-methyl-2-oxoquinolinyl)propanoic acid and its tributyltin(IV) complex has been performed. The ligand precursor has been obtained by the hydrolysis of methyl ester synthesized in the reaction between 4-hydroxy-2-quinolone and methyl 2- bromopropanoate. In the reaction of deprotonated ligand with equimolar amount of Bu3SnCl, the desired complex was precipitated as a white solid. The synthesized compounds have been characterized using standard analytical methods. The following research of ligand precursor and corresponding tributyltin(IV) complex will be focused on examining their antitumor activity against various cancer cell lines.",
publisher = "Beograd : Srpsko hemijsko društvo",
journal = "Kratki izvodi radova ; Knjiga radova / 59. savetovanje Srpskog hemijskog društva, Novi Sad 1. i 2. jun 2023. godine",
title = "Sinteza i karakterizacija kompleksa tributilkalaja(IV) sa 2-(4- hidroksi-2-oksohinolinil)propanskom kiselinom, Synthesis and characterization of novel tributyltin(IV) complex with 2-(4-hydroxy-2-oxoquinolinyl)propanoic acid",
pages = "88",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6776"
}

Kasalović, M. P., Lađarević, J., Božić, B., Jevtić, V. V., Kaluđerović, G. N.,& Pantelić, N. Đ.. (2023). Sinteza i karakterizacija kompleksa tributilkalaja(IV) sa 2-(4- hidroksi-2-oksohinolinil)propanskom kiselinom. in Kratki izvodi radova ; Knjiga radova / 59. savetovanje Srpskog hemijskog društva, Novi Sad 1. i 2. jun 2023. godine
Beograd : Srpsko hemijsko društvo., 88.
https://hdl.handle.net/21.15107/rcub_technorep_6776

Kasalović MP, Lađarević J, Božić B, Jevtić VV, Kaluđerović GN, Pantelić NĐ. Sinteza i karakterizacija kompleksa tributilkalaja(IV) sa 2-(4- hidroksi-2-oksohinolinil)propanskom kiselinom. in Kratki izvodi radova ; Knjiga radova / 59. savetovanje Srpskog hemijskog društva, Novi Sad 1. i 2. jun 2023. godine. 2023;:88.
https://hdl.handle.net/21.15107/rcub_technorep_6776 .

Kasalović, Marijana P., Lađarević, Jelena, Božić, Bojan, Jevtić, Verica V., Kaluđerović, Goran N., Pantelić, Nebojša Đ., "Sinteza i karakterizacija kompleksa tributilkalaja(IV) sa 2-(4- hidroksi-2-oksohinolinil)propanskom kiselinom" in Kratki izvodi radova ; Knjiga radova / 59. savetovanje Srpskog hemijskog društva, Novi Sad 1. i 2. jun 2023. godine (2023):88,
https://hdl.handle.net/21.15107/rcub_technorep_6776 .

TY  - JOUR
AU  - Ugrinović, Vukašin
AU  - Marković, Maja
AU  - Božić, Bojan
AU  - Panić, Vesna
AU  - Veljović, Đorđe
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6852
AB  - Hydrogels are attractive materials for drug delivery applications due to biocompatible, porous structure with the possibility to load and deliver drugs in a controllable manner. In this paper, poly(methacrylic acid) (PMAA) hydrogels are described, which are synthesized by free-radical polymerization, using poly(ethylene glycol) diacrylate (PEGDA) as a crosslinker. Influence of the PEGDA content on hydrogel properties was investigated and compared to commonly used crosslinker - N,N’-methylenebisacrylamide (MBA). The increasing concentration of crosslinkers led to a higher degree of crosslinking, which was demonstrated by a higher degree of conversion, lower swelling capacity, and improved thermal stability and mechanical properties. Also, the PEGDA-crosslinked hydrogels demonstrated a higher degree of crosslinking than the corresponding MBA-crosslinked hydrogels. Potential application of the synthesized hydrogels for controlled drug delivery was investigated by using two model drugs - oxaprozin and ciprofloxacin. In vitro drug release tests indicated that the interactions between drug, polymer and medium have a key influence on the drug release behavior, rather than the swelling rate. Drug release tests in simulated gastrointestinal conditions indicated that PEGDA-crosslinked PMAA hydrogels are suitable for colon-targeted delivery of oxaprozin.
AB  - Zbog svoje biokompatibilne, visoko-porozne strukture i mogućnosti da nose i kontrolisano
otpuštaju lekove, hidrogelovi su našli široku primenu u biomedicini. U ovom radu,
hidrogelovi na bazi poli(metakrilne kiseline) (PMK), umreženi pomoću poli(etilen-glikol)
diakrilata (PEGDA), sintetisani su metodom toplotno-indukovane slobodno-radikalske
polimerizacije. Ispitan je uticaj sadržaja PEGDA na svojstva hidrogelova i upoređen sa
uticajem najčešće korišćenog umreživača – N,N' – metilenbisakrilamida (MBA). Povećanje
količine oba umreživača dovelo je do većeg stepena umreženja, što je bilo manifestovano
povećanjem stepena konverzije monomera, smanjenjem ravnotežnog stepena bubrenja i
poboljšanim toplotnim i mehaničkim svojstvima. Takođe, hidrogelovi umreženi pomoću
PEGDA pokazali su veći stepen umreženja u odnosu na odgovarajuće hidrogelove umrežene
pomoću MBA. Mogućnost primene dobijenih hidrogelova za kontrolisano otpuštanje lekova,
ispitivano je korišćenjem dva leka – oksaprozina i ciprofloksacina. In vitro testovi
otpuštanja pokazali su da presudan uticaj na kinetiku otpuštanja imaju međusobne interakcije
između leka, hidrogela i medijuma, a ne stepen i brzina bubrenja hidrogela. Prema tome,
otpuštanje ciprofloksacina je bilo intenzivnije u kiseloj sredini, a oksaprozina u baznoj.
Otpuštanje u simuliranim gastrointestinalnim uslovima pokazalo je da su PEGDA-umreženi
hidrogelovi pogodni za kontrolisano otpuštanje oksaprozina u debelo crevo.
PB  - Savez hemijskih inženjera Srbije
T2  - Hemijska industrija
T1  - Poly(methacrylic acid) hydrogels crosslinked by poly(ethylene glycol) diacrylate as pH-responsive systems for drug delivery applications
T1  - Hidrogelovi na bazi poli(metakrilne kiseline) umreženi korišćenjem poli(etilen-glikol) diakrilata, kao pH-osetljivi nosači za kontrolisano otpuštanje lekova
EP  - 249
IS  - 4
SP  - 235
VL  - 77
DO  - 10.2298/HEMIND221228018U
ER  - 

@article{
author = "Ugrinović, Vukašin and Marković, Maja and Božić, Bojan and Panić, Vesna and Veljović, Đorđe",
year = "2023",
abstract = "Hydrogels are attractive materials for drug delivery applications due to biocompatible, porous structure with the possibility to load and deliver drugs in a controllable manner. In this paper, poly(methacrylic acid) (PMAA) hydrogels are described, which are synthesized by free-radical polymerization, using poly(ethylene glycol) diacrylate (PEGDA) as a crosslinker. Influence of the PEGDA content on hydrogel properties was investigated and compared to commonly used crosslinker - N,N’-methylenebisacrylamide (MBA). The increasing concentration of crosslinkers led to a higher degree of crosslinking, which was demonstrated by a higher degree of conversion, lower swelling capacity, and improved thermal stability and mechanical properties. Also, the PEGDA-crosslinked hydrogels demonstrated a higher degree of crosslinking than the corresponding MBA-crosslinked hydrogels. Potential application of the synthesized hydrogels for controlled drug delivery was investigated by using two model drugs - oxaprozin and ciprofloxacin. In vitro drug release tests indicated that the interactions between drug, polymer and medium have a key influence on the drug release behavior, rather than the swelling rate. Drug release tests in simulated gastrointestinal conditions indicated that PEGDA-crosslinked PMAA hydrogels are suitable for colon-targeted delivery of oxaprozin., Zbog svoje biokompatibilne, visoko-porozne strukture i mogućnosti da nose i kontrolisano
otpuštaju lekove, hidrogelovi su našli široku primenu u biomedicini. U ovom radu,
hidrogelovi na bazi poli(metakrilne kiseline) (PMK), umreženi pomoću poli(etilen-glikol)
diakrilata (PEGDA), sintetisani su metodom toplotno-indukovane slobodno-radikalske
polimerizacije. Ispitan je uticaj sadržaja PEGDA na svojstva hidrogelova i upoređen sa
uticajem najčešće korišćenog umreživača – N,N' – metilenbisakrilamida (MBA). Povećanje
količine oba umreživača dovelo je do većeg stepena umreženja, što je bilo manifestovano
povećanjem stepena konverzije monomera, smanjenjem ravnotežnog stepena bubrenja i
poboljšanim toplotnim i mehaničkim svojstvima. Takođe, hidrogelovi umreženi pomoću
PEGDA pokazali su veći stepen umreženja u odnosu na odgovarajuće hidrogelove umrežene
pomoću MBA. Mogućnost primene dobijenih hidrogelova za kontrolisano otpuštanje lekova,
ispitivano je korišćenjem dva leka – oksaprozina i ciprofloksacina. In vitro testovi
otpuštanja pokazali su da presudan uticaj na kinetiku otpuštanja imaju međusobne interakcije
između leka, hidrogela i medijuma, a ne stepen i brzina bubrenja hidrogela. Prema tome,
otpuštanje ciprofloksacina je bilo intenzivnije u kiseloj sredini, a oksaprozina u baznoj.
Otpuštanje u simuliranim gastrointestinalnim uslovima pokazalo je da su PEGDA-umreženi
hidrogelovi pogodni za kontrolisano otpuštanje oksaprozina u debelo crevo.",
publisher = "Savez hemijskih inženjera Srbije",
journal = "Hemijska industrija",
title = "Poly(methacrylic acid) hydrogels crosslinked by poly(ethylene glycol) diacrylate as pH-responsive systems for drug delivery applications, Hidrogelovi na bazi poli(metakrilne kiseline) umreženi korišćenjem poli(etilen-glikol) diakrilata, kao pH-osetljivi nosači za kontrolisano otpuštanje lekova",
pages = "249-235",
number = "4",
volume = "77",
doi = "10.2298/HEMIND221228018U"
}

Ugrinović, V., Marković, M., Božić, B., Panić, V.,& Veljović, Đ.. (2023). Poly(methacrylic acid) hydrogels crosslinked by poly(ethylene glycol) diacrylate as pH-responsive systems for drug delivery applications. in Hemijska industrija
Savez hemijskih inženjera Srbije., 77(4), 235-249.
https://doi.org/10.2298/HEMIND221228018U

Ugrinović V, Marković M, Božić B, Panić V, Veljović Đ. Poly(methacrylic acid) hydrogels crosslinked by poly(ethylene glycol) diacrylate as pH-responsive systems for drug delivery applications. in Hemijska industrija. 2023;77(4):235-249.
doi:10.2298/HEMIND221228018U .

Ugrinović, Vukašin, Marković, Maja, Božić, Bojan, Panić, Vesna, Veljović, Đorđe, "Poly(methacrylic acid) hydrogels crosslinked by poly(ethylene glycol) diacrylate as pH-responsive systems for drug delivery applications" in Hemijska industrija, 77, no. 4 (2023):235-249,
https://doi.org/10.2298/HEMIND221228018U . .

TY  - JOUR
AU  - Lunić, Tanja
AU  - Lađarević, Jelena
AU  - Mandić, Marija
AU  - Veruševski, Vanja
AU  - Božić-Nedeljković, Biljana
AU  - Mijin, Dušan
AU  - Božić, Bojan
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4728
AB  - Series of twenty-four 2-pyridone derivatives were screened and selected using the antioxidant ABTS assay
in order to find the most prominent compounds for further in vitro and in silico analyses. Seven derivatives with the highest antioxidant activities were selected and evaluated by β-carotene bleaching assay,
where all of the compounds exhibited better activities than standard antioxidant substance, vitamin C.
Furthermore, seven selected 2-pyridones exhibited significant anti-neuroinflammatory activity by reducing the production of pro-inflammatory mediators (ROS, NO, IL-6, and TNF-α) by LPS-stimulated BV2
microglial cells. Moreover, neuroprotective activity in microglia supernatant transfer model system on
SH-SY5Y neuronal cells has been observed. Anti-neuroinflammatory mechanisms of selected 2-pyridones
have been investigated by molecular docking studies of the TLR4 signaling pathway proteins as well as
inducible nitric oxide synthase. The present study suggests that selected 2-pyridone derivatives can alleviate neuroinflammation in microglial cells and protect the surrounding neuronal cells from damage,
which qualifies them for further investigations towards neurodegenerative diseases associated with inflammation.
PB  - Elsevier B.V.
T2  - Journal of Molecular Structure
T1  - Antioxidant and neuroprotective activities of selected 2-pyridones: In vitro and in silico study
SP  - 132546
VL  - 1256
DO  - 10.1016/j.molstruc.2022.132546
ER  - 

@article{
author = "Lunić, Tanja and Lađarević, Jelena and Mandić, Marija and Veruševski, Vanja and Božić-Nedeljković, Biljana and Mijin, Dušan and Božić, Bojan",
year = "2022",
abstract = "Series of twenty-four 2-pyridone derivatives were screened and selected using the antioxidant ABTS assay
in order to find the most prominent compounds for further in vitro and in silico analyses. Seven derivatives with the highest antioxidant activities were selected and evaluated by β-carotene bleaching assay,
where all of the compounds exhibited better activities than standard antioxidant substance, vitamin C.
Furthermore, seven selected 2-pyridones exhibited significant anti-neuroinflammatory activity by reducing the production of pro-inflammatory mediators (ROS, NO, IL-6, and TNF-α) by LPS-stimulated BV2
microglial cells. Moreover, neuroprotective activity in microglia supernatant transfer model system on
SH-SY5Y neuronal cells has been observed. Anti-neuroinflammatory mechanisms of selected 2-pyridones
have been investigated by molecular docking studies of the TLR4 signaling pathway proteins as well as
inducible nitric oxide synthase. The present study suggests that selected 2-pyridone derivatives can alleviate neuroinflammation in microglial cells and protect the surrounding neuronal cells from damage,
which qualifies them for further investigations towards neurodegenerative diseases associated with inflammation.",
publisher = "Elsevier B.V.",
journal = "Journal of Molecular Structure",
title = "Antioxidant and neuroprotective activities of selected 2-pyridones: In vitro and in silico study",
pages = "132546",
volume = "1256",
doi = "10.1016/j.molstruc.2022.132546"
}

Lunić, T., Lađarević, J., Mandić, M., Veruševski, V., Božić-Nedeljković, B., Mijin, D.,& Božić, B.. (2022). Antioxidant and neuroprotective activities of selected 2-pyridones: In vitro and in silico study. in Journal of Molecular Structure
Elsevier B.V.., 1256, 132546.
https://doi.org/10.1016/j.molstruc.2022.132546

Lunić T, Lađarević J, Mandić M, Veruševski V, Božić-Nedeljković B, Mijin D, Božić B. Antioxidant and neuroprotective activities of selected 2-pyridones: In vitro and in silico study. in Journal of Molecular Structure. 2022;1256:132546.
doi:10.1016/j.molstruc.2022.132546 .

Lunić, Tanja, Lađarević, Jelena, Mandić, Marija, Veruševski, Vanja, Božić-Nedeljković, Biljana, Mijin, Dušan, Božić, Bojan, "Antioxidant and neuroprotective activities of selected 2-pyridones: In vitro and in silico study" in Journal of Molecular Structure, 1256 (2022):132546,
https://doi.org/10.1016/j.molstruc.2022.132546 . .

TY  - JOUR
AU  - Mandić, Marija
AU  - Mitić, Katarina
AU  - Nedeljković, Predrag
AU  - Perić, Mina
AU  - Božić, Bojan
AU  - Lunić, Tanja
AU  - Bačić, Ana
AU  - Rajilić-Stojanović, Mirjana
AU  - Peković, Sanja
AU  - Nedeljković Božić, Biljana
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5097
AB  - The present study aimed to investigate the neuroprotective effects of the vitamin B complex (B1, B2, B3, B5, B6, and B12—VBC), by studying the changes in the femoral nerve, quadriceps muscle, popliteal lymph nodes and gut microbiota in the rat model of multiple sclerosis, experimental autoimmune encephalomyelitis (EAE). VBC treatment attenuated clinical signs of EAE during the disease, and reduced the duration of EAE thereby contributing to a faster recovery. In VBC-treated EAE rats, a significant decrease in nerve and muscle nuclear density was revealed during the onset period of the disease, while a marked increase was detected at the end of the disease, compared with untreated EAE rats. In the lymph nodes of VBC-treated EAE rats, a fewer number of lymphoid follicles in the cortical area and smaller epithelioid granulomas were detected. The changes in microbiota composition were examined using 16S rRNA gene sequencing and bioinformatics analysis, which revealed the potential of VBC treatment in establishing and/or maintaining gut microbiota homeostasis. Finally, the present study demonstrated that VBC treatment ameliorated the cellular changes in the affected peripheral nerve, muscles innervated by this nerve, and the gut microbiota dysbiosis which occurred during the EAE.
PB  - MDPI
T2  - Nutrients
T1  - Vitamin B Complex and Experimental Autoimmune Encephalomyelitis—Attenuation of the Clinical Signs and Gut Microbiota Dysbiosis
IS  - 6
SP  - 1273
VL  - 14
DO  - 10.3390/nu14061273
ER  - 

@article{
author = "Mandić, Marija and Mitić, Katarina and Nedeljković, Predrag and Perić, Mina and Božić, Bojan and Lunić, Tanja and Bačić, Ana and Rajilić-Stojanović, Mirjana and Peković, Sanja and Nedeljković Božić, Biljana",
year = "2022",
abstract = "The present study aimed to investigate the neuroprotective effects of the vitamin B complex (B1, B2, B3, B5, B6, and B12—VBC), by studying the changes in the femoral nerve, quadriceps muscle, popliteal lymph nodes and gut microbiota in the rat model of multiple sclerosis, experimental autoimmune encephalomyelitis (EAE). VBC treatment attenuated clinical signs of EAE during the disease, and reduced the duration of EAE thereby contributing to a faster recovery. In VBC-treated EAE rats, a significant decrease in nerve and muscle nuclear density was revealed during the onset period of the disease, while a marked increase was detected at the end of the disease, compared with untreated EAE rats. In the lymph nodes of VBC-treated EAE rats, a fewer number of lymphoid follicles in the cortical area and smaller epithelioid granulomas were detected. The changes in microbiota composition were examined using 16S rRNA gene sequencing and bioinformatics analysis, which revealed the potential of VBC treatment in establishing and/or maintaining gut microbiota homeostasis. Finally, the present study demonstrated that VBC treatment ameliorated the cellular changes in the affected peripheral nerve, muscles innervated by this nerve, and the gut microbiota dysbiosis which occurred during the EAE.",
publisher = "MDPI",
journal = "Nutrients",
title = "Vitamin B Complex and Experimental Autoimmune Encephalomyelitis—Attenuation of the Clinical Signs and Gut Microbiota Dysbiosis",
number = "6",
pages = "1273",
volume = "14",
doi = "10.3390/nu14061273"
}

Mandić, M., Mitić, K., Nedeljković, P., Perić, M., Božić, B., Lunić, T., Bačić, A., Rajilić-Stojanović, M., Peković, S.,& Nedeljković Božić, B.. (2022). Vitamin B Complex and Experimental Autoimmune Encephalomyelitis—Attenuation of the Clinical Signs and Gut Microbiota Dysbiosis. in Nutrients
MDPI., 14(6), 1273.
https://doi.org/10.3390/nu14061273

Mandić M, Mitić K, Nedeljković P, Perić M, Božić B, Lunić T, Bačić A, Rajilić-Stojanović M, Peković S, Nedeljković Božić B. Vitamin B Complex and Experimental Autoimmune Encephalomyelitis—Attenuation of the Clinical Signs and Gut Microbiota Dysbiosis. in Nutrients. 2022;14(6):1273.
doi:10.3390/nu14061273 .

Mandić, Marija, Mitić, Katarina, Nedeljković, Predrag, Perić, Mina, Božić, Bojan, Lunić, Tanja, Bačić, Ana, Rajilić-Stojanović, Mirjana, Peković, Sanja, Nedeljković Božić, Biljana, "Vitamin B Complex and Experimental Autoimmune Encephalomyelitis—Attenuation of the Clinical Signs and Gut Microbiota Dysbiosis" in Nutrients, 14, no. 6 (2022):1273,
https://doi.org/10.3390/nu14061273 . .

TY  - JOUR
AU  - Vidović, Dunja
AU  - Milošević, Nataša
AU  - Pavlović, Nebojša
AU  - Todorović, Nemanja
AU  - Panić Čanji, Jelena
AU  - Ćurčić, Jelena
AU  - Banjac, Nebojša
AU  - Trišović, Nemanja
AU  - Božić, Bojan
AU  - Lalić-Popović, Mladena
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5150
AB  - Passive permeability is one of the key features that determine absorbability and one of the most studied properties in the early phases of drug development. Newly synthesized succinimide derivatives from two different series (1-aryl-3-methylsuccinimides and 1-aryl-3-ethyl-3-methylsuccinimides) with high biological potential have been subjected to estimation of their passive permeability and their association with (a) experimentally obtained anisotropic lipophilicity, (b) in silico–calculated lipophilicity and (c) in silico–predicted permeability and absorbability. Non-cellular-based parallel artificial membrane permeability assay was applied for quantifying their passive permeation, expressed as logPapp. Passive permeation was governed by the lipophilicity of the analysed compounds, and anisotropic lipophilicity was related with statistically significant passive transcellular diffusion (r2 = 0.614, P < 0.001). Moreover, experimentally determined passive permeability, logPapp, was statistically significantly associated with both in silico–predicted absorption constant, ka (r2 = 0.7886, P < 0.001), and human intestinal absorption (HIA) in percentage (r2 = 0.484, P < 0.001), respectively. However, there was no statistically significant relationship between experimentally obtained permeability on non-cellular-based model and in silico–predicted Caco-2 permeability based on the predictions conducted on two different software. Based on the obtained results, anisotropic systems are promising surrogates for determining lipophilicity, except for compounds with acidic functional groups that are completely ionized under (pH = 7.4).
T2  - Biomedical Chromatography
T1  - In silico–in vitro estimation of lipophilicity and permeability association for succinimide derivatives using chromatographic anisotropic systems and parallel artificial membrane permeability assay
DO  - 10.1002/bmc.5413
ER  - 

@article{
author = "Vidović, Dunja and Milošević, Nataša and Pavlović, Nebojša and Todorović, Nemanja and Panić Čanji, Jelena and Ćurčić, Jelena and Banjac, Nebojša and Trišović, Nemanja and Božić, Bojan and Lalić-Popović, Mladena",
year = "2022",
abstract = "Passive permeability is one of the key features that determine absorbability and one of the most studied properties in the early phases of drug development. Newly synthesized succinimide derivatives from two different series (1-aryl-3-methylsuccinimides and 1-aryl-3-ethyl-3-methylsuccinimides) with high biological potential have been subjected to estimation of their passive permeability and their association with (a) experimentally obtained anisotropic lipophilicity, (b) in silico–calculated lipophilicity and (c) in silico–predicted permeability and absorbability. Non-cellular-based parallel artificial membrane permeability assay was applied for quantifying their passive permeation, expressed as logPapp. Passive permeation was governed by the lipophilicity of the analysed compounds, and anisotropic lipophilicity was related with statistically significant passive transcellular diffusion (r2 = 0.614, P < 0.001). Moreover, experimentally determined passive permeability, logPapp, was statistically significantly associated with both in silico–predicted absorption constant, ka (r2 = 0.7886, P < 0.001), and human intestinal absorption (HIA) in percentage (r2 = 0.484, P < 0.001), respectively. However, there was no statistically significant relationship between experimentally obtained permeability on non-cellular-based model and in silico–predicted Caco-2 permeability based on the predictions conducted on two different software. Based on the obtained results, anisotropic systems are promising surrogates for determining lipophilicity, except for compounds with acidic functional groups that are completely ionized under (pH = 7.4).",
journal = "Biomedical Chromatography",
title = "In silico–in vitro estimation of lipophilicity and permeability association for succinimide derivatives using chromatographic anisotropic systems and parallel artificial membrane permeability assay",
doi = "10.1002/bmc.5413"
}

Vidović, D., Milošević, N., Pavlović, N., Todorović, N., Panić Čanji, J., Ćurčić, J., Banjac, N., Trišović, N., Božić, B.,& Lalić-Popović, M.. (2022). In silico–in vitro estimation of lipophilicity and permeability association for succinimide derivatives using chromatographic anisotropic systems and parallel artificial membrane permeability assay. in Biomedical Chromatography.
https://doi.org/10.1002/bmc.5413

Vidović D, Milošević N, Pavlović N, Todorović N, Panić Čanji J, Ćurčić J, Banjac N, Trišović N, Božić B, Lalić-Popović M. In silico–in vitro estimation of lipophilicity and permeability association for succinimide derivatives using chromatographic anisotropic systems and parallel artificial membrane permeability assay. in Biomedical Chromatography. 2022;.
doi:10.1002/bmc.5413 .

Vidović, Dunja, Milošević, Nataša, Pavlović, Nebojša, Todorović, Nemanja, Panić Čanji, Jelena, Ćurčić, Jelena, Banjac, Nebojša, Trišović, Nemanja, Božić, Bojan, Lalić-Popović, Mladena, "In silico–in vitro estimation of lipophilicity and permeability association for succinimide derivatives using chromatographic anisotropic systems and parallel artificial membrane permeability assay" in Biomedical Chromatography (2022),
https://doi.org/10.1002/bmc.5413 . .

TY  - JOUR
AU  - Božić, Bojan
AU  - Lađarević, Jelena
AU  - Petković, Miloš
AU  - Mijin, Dušan
AU  - Stavber, Stojan
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5251
AB  - The susceptibility of the carbonyl group towards nucleophilic attack affords the construction of various organic compounds. Thus, investigations of carbonyl activation applying greener
methodologies are highly important. In the present work, among the investigated N-halo compounds, N-fluorobenzenesulfonimide (NFSi) has been found as an efficient and selective catalyst in the reaction of direct esterification of aryl and alkyl carboxylic acids supported by microwave (MW) irradiation. The comprehensive esterification of different benzoic acids and mono-, di- and tri-carboxy alkyl derivatives was performed, whereby significant reaction time reductions were achieved. The presented method used NFSi as an easily manipulatable, non-metal, water- and air-tolerant catalyst, allowing simple synthetic and isolation procedures and energy saving, compared to conventional methodologies. Importantly, in contrast to esterification under thermal conditions, where N-halo compounds behave as pre-catalysts, in the MW-supported protocol, a distinct reaction mechanism has been proposed that assumes NFSi as a sustainable catalyst. Moreover, a scale-up of the industrially important derivative was performed.
PB  - MDPI
T2  - Catalysts
T1  - Microwave Assisted Esterification of Aryl/Alkyl Acids Catalyzed by N-Fluorobenzenesulfonimide
IS  - 11
SP  - 1413
VL  - 12
DO  - 10.3390/catal12111413
ER  - 

@article{
author = "Božić, Bojan and Lađarević, Jelena and Petković, Miloš and Mijin, Dušan and Stavber, Stojan",
year = "2022",
abstract = "The susceptibility of the carbonyl group towards nucleophilic attack affords the construction of various organic compounds. Thus, investigations of carbonyl activation applying greener
methodologies are highly important. In the present work, among the investigated N-halo compounds, N-fluorobenzenesulfonimide (NFSi) has been found as an efficient and selective catalyst in the reaction of direct esterification of aryl and alkyl carboxylic acids supported by microwave (MW) irradiation. The comprehensive esterification of different benzoic acids and mono-, di- and tri-carboxy alkyl derivatives was performed, whereby significant reaction time reductions were achieved. The presented method used NFSi as an easily manipulatable, non-metal, water- and air-tolerant catalyst, allowing simple synthetic and isolation procedures and energy saving, compared to conventional methodologies. Importantly, in contrast to esterification under thermal conditions, where N-halo compounds behave as pre-catalysts, in the MW-supported protocol, a distinct reaction mechanism has been proposed that assumes NFSi as a sustainable catalyst. Moreover, a scale-up of the industrially important derivative was performed.",
publisher = "MDPI",
journal = "Catalysts",
title = "Microwave Assisted Esterification of Aryl/Alkyl Acids Catalyzed by N-Fluorobenzenesulfonimide",
number = "11",
pages = "1413",
volume = "12",
doi = "10.3390/catal12111413"
}

Božić, B., Lađarević, J., Petković, M., Mijin, D.,& Stavber, S.. (2022). Microwave Assisted Esterification of Aryl/Alkyl Acids Catalyzed by N-Fluorobenzenesulfonimide. in Catalysts
MDPI., 12(11), 1413.
https://doi.org/10.3390/catal12111413

Božić B, Lađarević J, Petković M, Mijin D, Stavber S. Microwave Assisted Esterification of Aryl/Alkyl Acids Catalyzed by N-Fluorobenzenesulfonimide. in Catalysts. 2022;12(11):1413.
doi:10.3390/catal12111413 .

Božić, Bojan, Lađarević, Jelena, Petković, Miloš, Mijin, Dušan, Stavber, Stojan, "Microwave Assisted Esterification of Aryl/Alkyl Acids Catalyzed by N-Fluorobenzenesulfonimide" in Catalysts, 12, no. 11 (2022):1413,
https://doi.org/10.3390/catal12111413 . .

TY  - CONF
AU  - Radovanović, Lidija
AU  - Lađarević, Jelena
AU  - Božić, Bojan
AU  - Kasalović, Marijana
AU  - Pantelić, Nebojša
AU  - Mijin, Dušan
AU  - Rogan, Jelena
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6724
AB  - 2-Quinolones represent important structural motifs in the numerous biologically active compounds
and naturally occurring alkaloids. Their derivatives show remarkable diversity of pharmalogical
properties such as antibacterial, antifungal, anticancer, antitubercular, anti-inflammatory, and
antihypertensive and play a significant role in the development of the new pharmaceuticals. On the
other hand, propanoic acid derivatives are known for their uniqe terapeutic activity. In an effort to
merge these two structural motifs, two-step synthesis of 3-(4-methyl-2-oxoquinolinyl)propanoic
acid, 1, was performed. The obtained compound was characterized by melting point, FTIR and
NMR spectra. The single crystals of molecule 1, was prepared by slow evaporation from the ethyl
acetate solution. The single crystal X-ray analysis revealed that molecule 1 crystallizes in
monoclinic P21/c space group with Z = 4. The main structural feature is pseudo wavy layer formed
by O–H···O and C–H···O interactions between adjacent molecules, whereas among the layers π···π
stacking and C–H···π interactions were observed, resulting in the formation of supramolecular
network. The main crystallographic data for 1: C13H13NO3, a = 9.2414(4), b = 9.0128(3),
c = 13.6567(6) Å, β = 109.676(4) °, V = 1071.06(8) Å
3
. The refinement based on F
2
(156
parameters) yielded: R1 = 0.0456, wR2 = 0.1287, S = 1.068 for all data, and R1 = 0.0433 for 1765
reflections with I ≥ 2σ(I).
PB  - Banja Luka : University in Banjaluka, Faculty of Technology
C3  - Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022
T1  - Synthesis, characterization and crystal structure of the 2-quinolone derivative
SP  - 22
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6724
ER  - 

@conference{
author = "Radovanović, Lidija and Lađarević, Jelena and Božić, Bojan and Kasalović, Marijana and Pantelić, Nebojša and Mijin, Dušan and Rogan, Jelena",
year = "2022",
abstract = "2-Quinolones represent important structural motifs in the numerous biologically active compounds
and naturally occurring alkaloids. Their derivatives show remarkable diversity of pharmalogical
properties such as antibacterial, antifungal, anticancer, antitubercular, anti-inflammatory, and
antihypertensive and play a significant role in the development of the new pharmaceuticals. On the
other hand, propanoic acid derivatives are known for their uniqe terapeutic activity. In an effort to
merge these two structural motifs, two-step synthesis of 3-(4-methyl-2-oxoquinolinyl)propanoic
acid, 1, was performed. The obtained compound was characterized by melting point, FTIR and
NMR spectra. The single crystals of molecule 1, was prepared by slow evaporation from the ethyl
acetate solution. The single crystal X-ray analysis revealed that molecule 1 crystallizes in
monoclinic P21/c space group with Z = 4. The main structural feature is pseudo wavy layer formed
by O–H···O and C–H···O interactions between adjacent molecules, whereas among the layers π···π
stacking and C–H···π interactions were observed, resulting in the formation of supramolecular
network. The main crystallographic data for 1: C13H13NO3, a = 9.2414(4), b = 9.0128(3),
c = 13.6567(6) Å, β = 109.676(4) °, V = 1071.06(8) Å
3
. The refinement based on F
2
(156
parameters) yielded: R1 = 0.0456, wR2 = 0.1287, S = 1.068 for all data, and R1 = 0.0433 for 1765
reflections with I ≥ 2σ(I).",
publisher = "Banja Luka : University in Banjaluka, Faculty of Technology",
journal = "Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022",
title = "Synthesis, characterization and crystal structure of the 2-quinolone derivative",
pages = "22",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6724"
}

Radovanović, L., Lađarević, J., Božić, B., Kasalović, M., Pantelić, N., Mijin, D.,& Rogan, J.. (2022). Synthesis, characterization and crystal structure of the 2-quinolone derivative. in Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022
Banja Luka : University in Banjaluka, Faculty of Technology., 22.
https://hdl.handle.net/21.15107/rcub_technorep_6724

Radovanović L, Lađarević J, Božić B, Kasalović M, Pantelić N, Mijin D, Rogan J. Synthesis, characterization and crystal structure of the 2-quinolone derivative. in Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022. 2022;:22.
https://hdl.handle.net/21.15107/rcub_technorep_6724 .

Radovanović, Lidija, Lađarević, Jelena, Božić, Bojan, Kasalović, Marijana, Pantelić, Nebojša, Mijin, Dušan, Rogan, Jelena, "Synthesis, characterization and crystal structure of the 2-quinolone derivative" in Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022 (2022):22,
https://hdl.handle.net/21.15107/rcub_technorep_6724 .

TY  - JOUR
AU  - Pantelić, Nebojša Đ.
AU  - Božić, Bojan
AU  - Zmejkovski, Bojana B.
AU  - Banjac, Nebojša R.
AU  - Dojčinović, Biljana
AU  - Wessjohann, Ludger A.
AU  - Kaluđerović, Goran N.
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5120
AB  - The synthesis of novel triphenyltin(IV) compounds, Ph3SnLn (n = 1–3), with oxaprozin (3-(4,5-diphenyloxazol-2-yl)propanoic acid), HL1, and the new propanoic acid derivatives 3-(4,5bis(4-methoxylphenyl)oxazol-2-yl)propanoic acid, HL2, and 3-(2,5-dioxo-4,4-diphenylimidazolidin1-yl)propanoic acid, HL3, has been performed. The ligands represent commercial drugs or their derivatives and the tin complexes have been characterized by standard analytical methods. The in vitro antiproliferative activity of both ligands and organotin(IV) compounds has been evaluated on the following tumour cell lines: human prostate cancer (PC-3), human colorectal adenocarcinoma (HT29), breast cancer (MCF-7), and hepatocellular cancer (HepG2), as well as on normal mouse embryonic fibroblast cells (NIH3T3) with the aid of MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-12 diphenyltetrazolium bromide) and CV (crystal violet) assays. Contrary to the inactive ligand precursors, all organotin(IV) carboxylates showed very good activity with IC50 values ranging from 0.100 to 0.758 µM. According to the CV assay (IC50 = 0.218 ± 0.025 µM), complex Ph3SnL1 demonstrated the highest cytotoxicity against the caspase 3 deficient MCF-7 cell line. Inductively coupled plasma mass spectrometry (ICP-MS) analysis indicated a two-fold lower concentration of tin in MCF-7 cells in comparison to platinum. To investigate the mechanism of action of the compound Ph3SnL1 on MCF-7 cells, morphological, autophagy and cell cycle analysis, as well as the activation of caspase and ROS/RNS and NO production, has been performed. Results suggest that Ph3SnL1 induces caspase-independent apoptosis in MCF-7 cells.
PB  - MDPI AG
T2  - Molecules
T1  - In Vitro Evaluation of Antiproliferative Properties of Novel Organotin(IV) Carboxylate Compounds with Propanoic Acid Derivatives on a Panel of Human Cancer Cell Lines
IS  - 11
SP  - 3199
VL  - 26
DO  - 10.3390/molecules26113199
ER  - 

@article{
author = "Pantelić, Nebojša Đ. and Božić, Bojan and Zmejkovski, Bojana B. and Banjac, Nebojša R. and Dojčinović, Biljana and Wessjohann, Ludger A. and Kaluđerović, Goran N.",
year = "2021",
abstract = "The synthesis of novel triphenyltin(IV) compounds, Ph3SnLn (n = 1–3), with oxaprozin (3-(4,5-diphenyloxazol-2-yl)propanoic acid), HL1, and the new propanoic acid derivatives 3-(4,5bis(4-methoxylphenyl)oxazol-2-yl)propanoic acid, HL2, and 3-(2,5-dioxo-4,4-diphenylimidazolidin1-yl)propanoic acid, HL3, has been performed. The ligands represent commercial drugs or their derivatives and the tin complexes have been characterized by standard analytical methods. The in vitro antiproliferative activity of both ligands and organotin(IV) compounds has been evaluated on the following tumour cell lines: human prostate cancer (PC-3), human colorectal adenocarcinoma (HT29), breast cancer (MCF-7), and hepatocellular cancer (HepG2), as well as on normal mouse embryonic fibroblast cells (NIH3T3) with the aid of MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-12 diphenyltetrazolium bromide) and CV (crystal violet) assays. Contrary to the inactive ligand precursors, all organotin(IV) carboxylates showed very good activity with IC50 values ranging from 0.100 to 0.758 µM. According to the CV assay (IC50 = 0.218 ± 0.025 µM), complex Ph3SnL1 demonstrated the highest cytotoxicity against the caspase 3 deficient MCF-7 cell line. Inductively coupled plasma mass spectrometry (ICP-MS) analysis indicated a two-fold lower concentration of tin in MCF-7 cells in comparison to platinum. To investigate the mechanism of action of the compound Ph3SnL1 on MCF-7 cells, morphological, autophagy and cell cycle analysis, as well as the activation of caspase and ROS/RNS and NO production, has been performed. Results suggest that Ph3SnL1 induces caspase-independent apoptosis in MCF-7 cells.",
publisher = "MDPI AG",
journal = "Molecules",
title = "In Vitro Evaluation of Antiproliferative Properties of Novel Organotin(IV) Carboxylate Compounds with Propanoic Acid Derivatives on a Panel of Human Cancer Cell Lines",
number = "11",
pages = "3199",
volume = "26",
doi = "10.3390/molecules26113199"
}

Pantelić, N. Đ., Božić, B., Zmejkovski, B. B., Banjac, N. R., Dojčinović, B., Wessjohann, L. A.,& Kaluđerović, G. N.. (2021). In Vitro Evaluation of Antiproliferative Properties of Novel Organotin(IV) Carboxylate Compounds with Propanoic Acid Derivatives on a Panel of Human Cancer Cell Lines. in Molecules
MDPI AG., 26(11), 3199.
https://doi.org/10.3390/molecules26113199

Pantelić NĐ, Božić B, Zmejkovski BB, Banjac NR, Dojčinović B, Wessjohann LA, Kaluđerović GN. In Vitro Evaluation of Antiproliferative Properties of Novel Organotin(IV) Carboxylate Compounds with Propanoic Acid Derivatives on a Panel of Human Cancer Cell Lines. in Molecules. 2021;26(11):3199.
doi:10.3390/molecules26113199 .

Pantelić, Nebojša Đ., Božić, Bojan, Zmejkovski, Bojana B., Banjac, Nebojša R., Dojčinović, Biljana, Wessjohann, Ludger A., Kaluđerović, Goran N., "In Vitro Evaluation of Antiproliferative Properties of Novel Organotin(IV) Carboxylate Compounds with Propanoic Acid Derivatives on a Panel of Human Cancer Cell Lines" in Molecules, 26, no. 11 (2021):3199,
https://doi.org/10.3390/molecules26113199 . .

TY  - CONF
AU  - Lađarević, Jelena
AU  - Radovanović, Lidija
AU  - Božić, Bojan
AU  - Mašulović, Aleksandra
AU  - Rogan, Jelena
AU  - Mijin, Dušan
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6726
AB  - Heterociklične azo boje zauzimaju značajno mesto u oblasti koordinacione hemije, usled
njihove široke upotrebe u elektrohemijskim i optičkim istraživanjima [1]. Sa drugestrane, kompleksi metala sa heterocikličnim ligandima imaju značajan biološki potencijal, jer ispoljavaju citotoksičnost, antimikrobnu i antioksidativnu aktivnost [2]. U ovom radu, azoboja na bazi piridona
(5-(4-metoksifenilazo)-1-etil-3-cijano-6-hidroksi-4-metil-2-piridon, HL) je upotrebljena za kompleksiranje sa Cu(II)-jonima u N,N-dimetilformamidu (DMF) na sobnoj temperaturi. Dobijeni
kompleks (CuL2(DMF)) je okarakterisan UV-Vis i ATR-FTIR spektroskopijom, kao i rendgenskom strukturnom analizom. Asimetrična jedinica
kompleksa se sastoji iz jednog Cu(II)-atoma, dva
helatna L-liganda i jednog koordiniranog molekula
DMF (slika 1). Geometrija oko Cu(II)-atoma je kvadratno-piramidalna, čiju baznu ravan čine dva Oatoma i dva N-atoma iz dva L-liganda, dok apikalni
položaj zauzima O-atom iz koordiniranog molekula
DMF. Kristalno pakovanje uspostavljeno je
prisustvom različitih nekovalentnih interakcija među
diskretnim jedinkama kompleksa (C–H···O, π–π i
slobodan elektronski par–π).
Antioksidativna aktivnost polazne azo boje i
kompleksa je određena pomoću ABTS (2,2’-
azinobis(3-etilbenzotiazolin-6-sulfonat) testa.
Kompleks je pokazao značajniju antioksidativnu
aktivnost u odnosu na polaznu azo boju i askorbinsku
kiselinu korišćenu kao standard. Kristalografski podaci: C70H74N18O14Cu2, Mr = 1518,55, trikliničan sistem, prostorna grupa P ,
a = 10,191(2), b = 13,012(3), c = 14,692(3) Å, α = 79,73(3), β = 71,96(3), γ = 80,20(3) °,
V = 1808,9(7) Å3
, R1 = 0,0539 za 4663 refleksija sa I  2σ(I).
AB  - In recent years, heterocyclic azo dyes have played significant role in the development of the
coordination chemistry, due to their wide application in the different fields of electrochemical and
optical studies [1]. Moreover, metal complexes with heterocyclic ligands in their architecture have
great biological potential since they exhibit cytotoxicity, antimicrobial and antioxidant activity [2].
In this work, pyridone azo dye (5-(4-methoxyphenylazo)-1-ethyl-3-cyano-6 hydroxy-4-methyl-2-
pyridone, HL) is used for the complexation with Cu(II) ions in N,N-dimethylformamide (DMF) at
room temperature. The obtained complex (CuL2(DMF)) is characterized by UV-Vis and ATRFTIR spectroscopy and single-crystal X-ray analysis. The asymmetric unit of complex is
comprised of one Cu(II) atom, two chelate L ligands and one coordinated DMF molecule (Figure
1). The coordination geometry of Cu(II) atom is
square-pyramidal with basal plane comprised of
two O and two N atoms originating from L ligands
while apical position is occupied by one O atom
from coordinated DMF. The crystal packing is
established with the presence of different noncovalent interactions between discrete complex
units (C–H···O/N, π–π and lone pair–π).
Furthermore, antioxidant activities of the
starting azo dye and the complex have been
evaluated by the ABTS (2,2’-azinobis-(3-
ethylbenzothiazoline-6-sulfonate)) radicalscavenging assay. The complex exhibited more
potent antioxidant activity than the starting dye
and ascorbic acid used as standard.
Crystal data: C70H74N18O14Cu2, Mr = 1518.55,
triclinic, space group P , a = 10.191(2),
b = 13.012(3), c = 14.692(3) Å, α = 79.73(3),
β = 71.96(3), γ = 80.20(3) °, V = 1808.9(7) Å3
, R1 = 0.0539 for 4663 observed reflections with
I  2σ(I).
PB  - Beograd : Srpsko kristalografsko društvo
C3  - Izvodi radova / XXVII konferencija Srpskog kristalografskog društva, Kragujevac, 16–17. septembar 2021
T1  - KRISTALNA STRUKTURA I ANTIOKSIDATIVNA AKTIVNOST Cu(II)-KOMPLEKSA AZO PIRIDONSKE BOJE
T1  - CRYSTAL STRUCTURE AND ANTIOXIDANT ACTIVITY OF Cu(II) COMPLEX OF AZO PYRIDONE DYE
EP  - 37
SP  - 36
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6726
ER  - 

@conference{
author = "Lađarević, Jelena and Radovanović, Lidija and Božić, Bojan and Mašulović, Aleksandra and Rogan, Jelena and Mijin, Dušan",
year = "2021",
abstract = "Heterociklične azo boje zauzimaju značajno mesto u oblasti koordinacione hemije, usled
njihove široke upotrebe u elektrohemijskim i optičkim istraživanjima [1]. Sa drugestrane, kompleksi metala sa heterocikličnim ligandima imaju značajan biološki potencijal, jer ispoljavaju citotoksičnost, antimikrobnu i antioksidativnu aktivnost [2]. U ovom radu, azoboja na bazi piridona
(5-(4-metoksifenilazo)-1-etil-3-cijano-6-hidroksi-4-metil-2-piridon, HL) je upotrebljena za kompleksiranje sa Cu(II)-jonima u N,N-dimetilformamidu (DMF) na sobnoj temperaturi. Dobijeni
kompleks (CuL2(DMF)) je okarakterisan UV-Vis i ATR-FTIR spektroskopijom, kao i rendgenskom strukturnom analizom. Asimetrična jedinica
kompleksa se sastoji iz jednog Cu(II)-atoma, dva
helatna L-liganda i jednog koordiniranog molekula
DMF (slika 1). Geometrija oko Cu(II)-atoma je kvadratno-piramidalna, čiju baznu ravan čine dva Oatoma i dva N-atoma iz dva L-liganda, dok apikalni
položaj zauzima O-atom iz koordiniranog molekula
DMF. Kristalno pakovanje uspostavljeno je
prisustvom različitih nekovalentnih interakcija među
diskretnim jedinkama kompleksa (C–H···O, π–π i
slobodan elektronski par–π).
Antioksidativna aktivnost polazne azo boje i
kompleksa je određena pomoću ABTS (2,2’-
azinobis(3-etilbenzotiazolin-6-sulfonat) testa.
Kompleks je pokazao značajniju antioksidativnu
aktivnost u odnosu na polaznu azo boju i askorbinsku
kiselinu korišćenu kao standard. Kristalografski podaci: C70H74N18O14Cu2, Mr = 1518,55, trikliničan sistem, prostorna grupa P ,
a = 10,191(2), b = 13,012(3), c = 14,692(3) Å, α = 79,73(3), β = 71,96(3), γ = 80,20(3) °,
V = 1808,9(7) Å3
, R1 = 0,0539 za 4663 refleksija sa I  2σ(I)., In recent years, heterocyclic azo dyes have played significant role in the development of the
coordination chemistry, due to their wide application in the different fields of electrochemical and
optical studies [1]. Moreover, metal complexes with heterocyclic ligands in their architecture have
great biological potential since they exhibit cytotoxicity, antimicrobial and antioxidant activity [2].
In this work, pyridone azo dye (5-(4-methoxyphenylazo)-1-ethyl-3-cyano-6 hydroxy-4-methyl-2-
pyridone, HL) is used for the complexation with Cu(II) ions in N,N-dimethylformamide (DMF) at
room temperature. The obtained complex (CuL2(DMF)) is characterized by UV-Vis and ATRFTIR spectroscopy and single-crystal X-ray analysis. The asymmetric unit of complex is
comprised of one Cu(II) atom, two chelate L ligands and one coordinated DMF molecule (Figure
1). The coordination geometry of Cu(II) atom is
square-pyramidal with basal plane comprised of
two O and two N atoms originating from L ligands
while apical position is occupied by one O atom
from coordinated DMF. The crystal packing is
established with the presence of different noncovalent interactions between discrete complex
units (C–H···O/N, π–π and lone pair–π).
Furthermore, antioxidant activities of the
starting azo dye and the complex have been
evaluated by the ABTS (2,2’-azinobis-(3-
ethylbenzothiazoline-6-sulfonate)) radicalscavenging assay. The complex exhibited more
potent antioxidant activity than the starting dye
and ascorbic acid used as standard.
Crystal data: C70H74N18O14Cu2, Mr = 1518.55,
triclinic, space group P , a = 10.191(2),
b = 13.012(3), c = 14.692(3) Å, α = 79.73(3),
β = 71.96(3), γ = 80.20(3) °, V = 1808.9(7) Å3
, R1 = 0.0539 for 4663 observed reflections with
I  2σ(I).",
publisher = "Beograd : Srpsko kristalografsko društvo",
journal = "Izvodi radova / XXVII konferencija Srpskog kristalografskog društva, Kragujevac, 16–17. septembar 2021",
title = "KRISTALNA STRUKTURA I ANTIOKSIDATIVNA AKTIVNOST Cu(II)-KOMPLEKSA AZO PIRIDONSKE BOJE, CRYSTAL STRUCTURE AND ANTIOXIDANT ACTIVITY OF Cu(II) COMPLEX OF AZO PYRIDONE DYE",
pages = "37-36",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6726"
}

Lađarević, J., Radovanović, L., Božić, B., Mašulović, A., Rogan, J.,& Mijin, D.. (2021). KRISTALNA STRUKTURA I ANTIOKSIDATIVNA AKTIVNOST Cu(II)-KOMPLEKSA AZO PIRIDONSKE BOJE. in Izvodi radova / XXVII konferencija Srpskog kristalografskog društva, Kragujevac, 16–17. septembar 2021
Beograd : Srpsko kristalografsko društvo., 36-37.
https://hdl.handle.net/21.15107/rcub_technorep_6726

Lađarević J, Radovanović L, Božić B, Mašulović A, Rogan J, Mijin D. KRISTALNA STRUKTURA I ANTIOKSIDATIVNA AKTIVNOST Cu(II)-KOMPLEKSA AZO PIRIDONSKE BOJE. in Izvodi radova / XXVII konferencija Srpskog kristalografskog društva, Kragujevac, 16–17. septembar 2021. 2021;:36-37.
https://hdl.handle.net/21.15107/rcub_technorep_6726 .

Lađarević, Jelena, Radovanović, Lidija, Božić, Bojan, Mašulović, Aleksandra, Rogan, Jelena, Mijin, Dušan, "KRISTALNA STRUKTURA I ANTIOKSIDATIVNA AKTIVNOST Cu(II)-KOMPLEKSA AZO PIRIDONSKE BOJE" in Izvodi radova / XXVII konferencija Srpskog kristalografskog društva, Kragujevac, 16–17. septembar 2021 (2021):36-37,
https://hdl.handle.net/21.15107/rcub_technorep_6726 .

TY  - CONF
AU  - Lađarević, Jelena
AU  - Vitnik, Željko
AU  - Vitnik, Vesna
AU  - Božić, Bojan
AU  - Mijin, Dušan
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6742
AB  - Spectral properties of ten 5-(substituted phenylazo)-3-cyano-1-ethyl-6-hydroxy-4-methyl-2-pyridones were investigated in formamide and N,N-dimethylformamide (DMF) by combining experimental study and density functional theory (DFT). In these two solvents, equilibrium between
hydrazone and anionic forms is confirmed both experimentally and theoretically. Relative position of the absorption maxima of hydrazone and anion forms is highly affected by the substitution pattern in the phenyl ring. Theoretical absorption energies showed good agreement with experimental data.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - Proceedings / 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24, 2021, Belgrade, Serbia
T1  - Experimental and theoretical UV-Vis spectral study of some arylazo pyridone dyes in amide solvents
EP  - 94
SP  - 92
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6742
ER  - 

@conference{
author = "Lađarević, Jelena and Vitnik, Željko and Vitnik, Vesna and Božić, Bojan and Mijin, Dušan",
year = "2021",
abstract = "Spectral properties of ten 5-(substituted phenylazo)-3-cyano-1-ethyl-6-hydroxy-4-methyl-2-pyridones were investigated in formamide and N,N-dimethylformamide (DMF) by combining experimental study and density functional theory (DFT). In these two solvents, equilibrium between
hydrazone and anionic forms is confirmed both experimentally and theoretically. Relative position of the absorption maxima of hydrazone and anion forms is highly affected by the substitution pattern in the phenyl ring. Theoretical absorption energies showed good agreement with experimental data.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "Proceedings / 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24, 2021, Belgrade, Serbia",
title = "Experimental and theoretical UV-Vis spectral study of some arylazo pyridone dyes in amide solvents",
pages = "94-92",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6742"
}

Lađarević, J., Vitnik, Ž., Vitnik, V., Božić, B.,& Mijin, D.. (2021). Experimental and theoretical UV-Vis spectral study of some arylazo pyridone dyes in amide solvents. in Proceedings / 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24, 2021, Belgrade, Serbia
Belgrade : Society of Physical Chemists of Serbia., 1, 92-94.
https://hdl.handle.net/21.15107/rcub_technorep_6742

Lađarević J, Vitnik Ž, Vitnik V, Božić B, Mijin D. Experimental and theoretical UV-Vis spectral study of some arylazo pyridone dyes in amide solvents. in Proceedings / 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24, 2021, Belgrade, Serbia. 2021;1:92-94.
https://hdl.handle.net/21.15107/rcub_technorep_6742 .

Lađarević, Jelena, Vitnik, Željko, Vitnik, Vesna, Božić, Bojan, Mijin, Dušan, "Experimental and theoretical UV-Vis spectral study of some arylazo pyridone dyes in amide solvents" in Proceedings / 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24, 2021, Belgrade, Serbia, 1 (2021):92-94,
https://hdl.handle.net/21.15107/rcub_technorep_6742 .

TY  - JOUR
AU  - Porobić, Slavica
AU  - Božić, Bojan
AU  - Dramićanin, Miroslav
AU  - Vitnik, Vesna
AU  - Vitnik, Željko
AU  - Marinović-Cincović, Milena
AU  - Mijin, Dušan
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4482
AB  - A series of nine 5-(4-substituted phenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones were synthesized and characterized by FT-IR, H-1 and C-13 NMR, UV-Vis, and PL spectroscopy. Photophysical properties of the dyes were examined in solvents of various polarities and at different pH values. The solvent effects on the absorbance and emission spectral shift were analyzed using Lippert-Mataga, Reichardt-Dimroth and Kamlet-Taft equations. Moreover, UV-Vis absorption and emission frequencies were correlated with Hammett substituent constants applying the linear free energy relationships. DFT calculations of the investigated dyes were accomplished to determine their structural and electronic properties.
PB  - Elsevier Sci Ltd, Oxford
T2  - Dyes and Pigments
T1  - Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects
VL  - 175
DO  - 10.1016/j.dyepig.2019.108139
ER  - 

@article{
author = "Porobić, Slavica and Božić, Bojan and Dramićanin, Miroslav and Vitnik, Vesna and Vitnik, Željko and Marinović-Cincović, Milena and Mijin, Dušan",
year = "2020",
abstract = "A series of nine 5-(4-substituted phenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones were synthesized and characterized by FT-IR, H-1 and C-13 NMR, UV-Vis, and PL spectroscopy. Photophysical properties of the dyes were examined in solvents of various polarities and at different pH values. The solvent effects on the absorbance and emission spectral shift were analyzed using Lippert-Mataga, Reichardt-Dimroth and Kamlet-Taft equations. Moreover, UV-Vis absorption and emission frequencies were correlated with Hammett substituent constants applying the linear free energy relationships. DFT calculations of the investigated dyes were accomplished to determine their structural and electronic properties.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Dyes and Pigments",
title = "Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects",
volume = "175",
doi = "10.1016/j.dyepig.2019.108139"
}

Porobić, S., Božić, B., Dramićanin, M., Vitnik, V., Vitnik, Ž., Marinović-Cincović, M.,& Mijin, D.. (2020). Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects. in Dyes and Pigments
Elsevier Sci Ltd, Oxford., 175.
https://doi.org/10.1016/j.dyepig.2019.108139

Porobić S, Božić B, Dramićanin M, Vitnik V, Vitnik Ž, Marinović-Cincović M, Mijin D. Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects. in Dyes and Pigments. 2020;175.
doi:10.1016/j.dyepig.2019.108139 .

Porobić, Slavica, Božić, Bojan, Dramićanin, Miroslav, Vitnik, Vesna, Vitnik, Željko, Marinović-Cincović, Milena, Mijin, Dušan, "Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects" in Dyes and Pigments, 175 (2020),
https://doi.org/10.1016/j.dyepig.2019.108139 . .

TY  - JOUR
AU  - Lović, Jelena
AU  - Avramov-Ivić, Milka
AU  - Božić, Bojan
AU  - Lađarević, Jelena
AU  - Mijin, Dušan
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4182
AB  - The inclusion complexes of the selected, potentially biologically active, succinimides with beta-cyclodextrin (beta CD) and (2-hydroxypropyl)-beta-cyclodextrin (HP beta CD) were prepared. The formation of the inclusion complexes of the investigated monophenyl and diphenyl succinimide derivatives was confirmed using attenuated total reflection (ATR) study. Their electrochemical behavior was examined by cyclic voltammetry (CV) and square wave voltammetry (SWV) in 0.05 M NaHCO3 on a gold electrode. The stability constants for compound 1 were determined by cyclic voltammetry and calculated as K-beta CD = 350.87 M-1 and K-HP(beta CD) = 250.67 M-1. The SWV measurements reveal well defined peak at potential E-p = similar to 60 mV and the higher currents at E-p for both inclusion complex of the succinimides compared to the free compounds. The impact of chlorine atom in the phenyl moiety of succinimide derivatives on the activity in electro oxidation reaction is presented. Among the studied succinimides, according to SWV measurements, the most active is the monophenyl succinimide derivative (compound 1) in complex with beta CD. The difference of peak current of compound 1 + beta CD compared to compound 1 + HP beta CD and free compound is 6.3 and 35.2 mu A cm(-2), respectively.
PB  - Slovensko Kemijsko Drustvo, Ljubljana
T2  - Acta Chimica Slovenica
T1  - Voltammetric Investigation of Inclusion Complexes of the Selected Succinimides with beta-Cyclodextrin and (2-Hydroxypropyl)-beta-Cyclodextrin
EP  - 189
IS  - 1
SP  - 182
VL  - 66
DO  - 10.17344/acsi.2018.4767
ER  - 

@article{
author = "Lović, Jelena and Avramov-Ivić, Milka and Božić, Bojan and Lađarević, Jelena and Mijin, Dušan",
year = "2019",
abstract = "The inclusion complexes of the selected, potentially biologically active, succinimides with beta-cyclodextrin (beta CD) and (2-hydroxypropyl)-beta-cyclodextrin (HP beta CD) were prepared. The formation of the inclusion complexes of the investigated monophenyl and diphenyl succinimide derivatives was confirmed using attenuated total reflection (ATR) study. Their electrochemical behavior was examined by cyclic voltammetry (CV) and square wave voltammetry (SWV) in 0.05 M NaHCO3 on a gold electrode. The stability constants for compound 1 were determined by cyclic voltammetry and calculated as K-beta CD = 350.87 M-1 and K-HP(beta CD) = 250.67 M-1. The SWV measurements reveal well defined peak at potential E-p = similar to 60 mV and the higher currents at E-p for both inclusion complex of the succinimides compared to the free compounds. The impact of chlorine atom in the phenyl moiety of succinimide derivatives on the activity in electro oxidation reaction is presented. Among the studied succinimides, according to SWV measurements, the most active is the monophenyl succinimide derivative (compound 1) in complex with beta CD. The difference of peak current of compound 1 + beta CD compared to compound 1 + HP beta CD and free compound is 6.3 and 35.2 mu A cm(-2), respectively.",
publisher = "Slovensko Kemijsko Drustvo, Ljubljana",
journal = "Acta Chimica Slovenica",
title = "Voltammetric Investigation of Inclusion Complexes of the Selected Succinimides with beta-Cyclodextrin and (2-Hydroxypropyl)-beta-Cyclodextrin",
pages = "189-182",
number = "1",
volume = "66",
doi = "10.17344/acsi.2018.4767"
}

Lović, J., Avramov-Ivić, M., Božić, B., Lađarević, J.,& Mijin, D.. (2019). Voltammetric Investigation of Inclusion Complexes of the Selected Succinimides with beta-Cyclodextrin and (2-Hydroxypropyl)-beta-Cyclodextrin. in Acta Chimica Slovenica
Slovensko Kemijsko Drustvo, Ljubljana., 66(1), 182-189.
https://doi.org/10.17344/acsi.2018.4767

Lović J, Avramov-Ivić M, Božić B, Lađarević J, Mijin D. Voltammetric Investigation of Inclusion Complexes of the Selected Succinimides with beta-Cyclodextrin and (2-Hydroxypropyl)-beta-Cyclodextrin. in Acta Chimica Slovenica. 2019;66(1):182-189.
doi:10.17344/acsi.2018.4767 .

Lović, Jelena, Avramov-Ivić, Milka, Božić, Bojan, Lađarević, Jelena, Mijin, Dušan, "Voltammetric Investigation of Inclusion Complexes of the Selected Succinimides with beta-Cyclodextrin and (2-Hydroxypropyl)-beta-Cyclodextrin" in Acta Chimica Slovenica, 66, no. 1 (2019):182-189,
https://doi.org/10.17344/acsi.2018.4767 . .

TY  - JOUR
AU  - Petković-Cvetković, Jelena
AU  - Božić, Bojan
AU  - Banjac, Nebojša
AU  - Lađarević, Jelena
AU  - Vitnik, Vesna
AU  - Vitnik, Željko
AU  - Valentić, Nataša
AU  - Ušćumlić, Gordana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4267
AB  - Novel succinimide derivatives were synthesized from 3-methyl-3-phenylsuccinic acid and substituted anilines under solvent-free conditions by using microwave irradiation. All obtained compounds were characterized by ultraviolet (UV), Fourier-transform infrared (FT-IR), H-1 and C-13 nuclear magnetic resonance (NMR) spectroscopy as well as by elemental analysis. The influence of the substituent electronic effects on spectroscopic data was analyzed by applying the Hammett equation. Moreover, a detailed interpretation and comparison of experimentally obtained and theoretically calculated FT-IR, UV and NMR spectra was performed. Density functional theory (DFT) calculated data of the investigated succinimides were obtained and analyzed in order to determine their structural, spectroscopic and electronic properties. Furthermore, ADMET factor profiling and in-silico prediction of potential biological activities of novel succinimide derivatives have been performed.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Spectroscopic and quantum chemical elucidation of newly synthesized 1-aryl-3-methyl-3-phenylpyrrolidine-2,5-diones as potential anticonvulsant agents
EP  - 137
IS  - 2
SP  - 125
VL  - 73
DO  - 10.2298/HEMIND190214011P
ER  - 

@article{
author = "Petković-Cvetković, Jelena and Božić, Bojan and Banjac, Nebojša and Lađarević, Jelena and Vitnik, Vesna and Vitnik, Željko and Valentić, Nataša and Ušćumlić, Gordana",
year = "2019",
abstract = "Novel succinimide derivatives were synthesized from 3-methyl-3-phenylsuccinic acid and substituted anilines under solvent-free conditions by using microwave irradiation. All obtained compounds were characterized by ultraviolet (UV), Fourier-transform infrared (FT-IR), H-1 and C-13 nuclear magnetic resonance (NMR) spectroscopy as well as by elemental analysis. The influence of the substituent electronic effects on spectroscopic data was analyzed by applying the Hammett equation. Moreover, a detailed interpretation and comparison of experimentally obtained and theoretically calculated FT-IR, UV and NMR spectra was performed. Density functional theory (DFT) calculated data of the investigated succinimides were obtained and analyzed in order to determine their structural, spectroscopic and electronic properties. Furthermore, ADMET factor profiling and in-silico prediction of potential biological activities of novel succinimide derivatives have been performed.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Spectroscopic and quantum chemical elucidation of newly synthesized 1-aryl-3-methyl-3-phenylpyrrolidine-2,5-diones as potential anticonvulsant agents",
pages = "137-125",
number = "2",
volume = "73",
doi = "10.2298/HEMIND190214011P"
}

Petković-Cvetković, J., Božić, B., Banjac, N., Lađarević, J., Vitnik, V., Vitnik, Ž., Valentić, N.,& Ušćumlić, G.. (2019). Spectroscopic and quantum chemical elucidation of newly synthesized 1-aryl-3-methyl-3-phenylpyrrolidine-2,5-diones as potential anticonvulsant agents. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 73(2), 125-137.
https://doi.org/10.2298/HEMIND190214011P

Petković-Cvetković J, Božić B, Banjac N, Lađarević J, Vitnik V, Vitnik Ž, Valentić N, Ušćumlić G. Spectroscopic and quantum chemical elucidation of newly synthesized 1-aryl-3-methyl-3-phenylpyrrolidine-2,5-diones as potential anticonvulsant agents. in Hemijska industrija. 2019;73(2):125-137.
doi:10.2298/HEMIND190214011P .

Petković-Cvetković, Jelena, Božić, Bojan, Banjac, Nebojša, Lađarević, Jelena, Vitnik, Vesna, Vitnik, Željko, Valentić, Nataša, Ušćumlić, Gordana, "Spectroscopic and quantum chemical elucidation of newly synthesized 1-aryl-3-methyl-3-phenylpyrrolidine-2,5-diones as potential anticonvulsant agents" in Hemijska industrija, 73, no. 2 (2019):125-137,
https://doi.org/10.2298/HEMIND190214011P . .

TY  - JOUR
AU  - Petković-Cvetković, Jelena
AU  - Božić, Bojan
AU  - Banjac, Nebojša
AU  - Petrović, Jovana
AU  - Soković, Marina
AU  - Vitnik, Vesna
AU  - Vitnik, Željko
AU  - Ušćumlić, Gordana
AU  - Valentić, Nataša
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4309
AB  - In the present study, twelve new 1-aryl-3-ethyl-3-methylpyrrolidine-2,5-diones were synthesized and their structures were characterized by FT-IR, H-1 NMR, C-13 NMR spectroscopy and elemental analysis. In the final step of synthetic rout, condensation between corresponding succinic acid and substituted anilines has been improved using the microwave irradiation. Significantly higher yields compared to conventional condensation have been observed. The preliminary biological results indicated that some of the synthesized compounds showed promising in vitro antifungal activities towards several test fungi. 1-(4-Bromophenyl)-3-ethyl-3-methylpyrrolidine-2,5-dione (8) exhibited significant in vitro inhibitory activities against broad spectra of fungus, and on the basis of obtained data, the investigated bromo derivative has to be observed as novel potential fungicide. The density functional theory (DFT) calculations have been performed in order to study the structure-activity relationship (SAR) of the investigated molecules. In order to prediction of the chemical activity of the molecule, the molecular electrostatic potential (MEP) map was analyzed for the optimized geometry of 1-phenyl-3-ethyl-3-methylpyrrolidine-2,5-dione (4) and 1-(4-bromophenyl)-3-ethyl-3-methylpyrrolidine-2,5-dione (8).
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of Molecular Structure
T1  - Synthesis, antimicrobial activity and quantum chemical investigation of novel succinimide derivatives
EP  - 156
SP  - 148
VL  - 1181
DO  - 10.1016/j.molstruc.2018.12.083
ER  - 

@article{
author = "Petković-Cvetković, Jelena and Božić, Bojan and Banjac, Nebojša and Petrović, Jovana and Soković, Marina and Vitnik, Vesna and Vitnik, Željko and Ušćumlić, Gordana and Valentić, Nataša",
year = "2019",
abstract = "In the present study, twelve new 1-aryl-3-ethyl-3-methylpyrrolidine-2,5-diones were synthesized and their structures were characterized by FT-IR, H-1 NMR, C-13 NMR spectroscopy and elemental analysis. In the final step of synthetic rout, condensation between corresponding succinic acid and substituted anilines has been improved using the microwave irradiation. Significantly higher yields compared to conventional condensation have been observed. The preliminary biological results indicated that some of the synthesized compounds showed promising in vitro antifungal activities towards several test fungi. 1-(4-Bromophenyl)-3-ethyl-3-methylpyrrolidine-2,5-dione (8) exhibited significant in vitro inhibitory activities against broad spectra of fungus, and on the basis of obtained data, the investigated bromo derivative has to be observed as novel potential fungicide. The density functional theory (DFT) calculations have been performed in order to study the structure-activity relationship (SAR) of the investigated molecules. In order to prediction of the chemical activity of the molecule, the molecular electrostatic potential (MEP) map was analyzed for the optimized geometry of 1-phenyl-3-ethyl-3-methylpyrrolidine-2,5-dione (4) and 1-(4-bromophenyl)-3-ethyl-3-methylpyrrolidine-2,5-dione (8).",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of Molecular Structure",
title = "Synthesis, antimicrobial activity and quantum chemical investigation of novel succinimide derivatives",
pages = "156-148",
volume = "1181",
doi = "10.1016/j.molstruc.2018.12.083"
}

Petković-Cvetković, J., Božić, B., Banjac, N., Petrović, J., Soković, M., Vitnik, V., Vitnik, Ž., Ušćumlić, G.,& Valentić, N.. (2019). Synthesis, antimicrobial activity and quantum chemical investigation of novel succinimide derivatives. in Journal of Molecular Structure
Elsevier Science Bv, Amsterdam., 1181, 148-156.
https://doi.org/10.1016/j.molstruc.2018.12.083

Petković-Cvetković J, Božić B, Banjac N, Petrović J, Soković M, Vitnik V, Vitnik Ž, Ušćumlić G, Valentić N. Synthesis, antimicrobial activity and quantum chemical investigation of novel succinimide derivatives. in Journal of Molecular Structure. 2019;1181:148-156.
doi:10.1016/j.molstruc.2018.12.083 .

Petković-Cvetković, Jelena, Božić, Bojan, Banjac, Nebojša, Petrović, Jovana, Soković, Marina, Vitnik, Vesna, Vitnik, Željko, Ušćumlić, Gordana, Valentić, Nataša, "Synthesis, antimicrobial activity and quantum chemical investigation of novel succinimide derivatives" in Journal of Molecular Structure, 1181 (2019):148-156,
https://doi.org/10.1016/j.molstruc.2018.12.083 . .

TY  - JOUR
AU  - Lađarević, Jelena
AU  - Božić, Bojan
AU  - Matović, Luka
AU  - Božić-Nedeljković, Biljana
AU  - Mijin, Dušan
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4312
AB  - A series of novel 5-(4-substituted phenylazo)-1-carboxymethyl-3-cyano-6-hydroxy-4-methyl-2-pyridones had been synthesized and characterized. The study includes spectral determination of the possible tautomeric forms and the intramolecular hydrogen bonding pattern. The influence of the bifurcated intramolecular hydrogen bond on the spectral properties has been discussed. The dyes exist in hydrazone form both solid state and in most of the employed solvents. Equilibrium between hydrazone and anion forms has been studied in N,N-dimethylformamide and N,N-dimethylacetamide. For quantitative elucidation of solvent effects on UV-Vis absorption maxima, a linear solvation energy relationship concept has been employed using Kamlet-Taft's and Catalan's equations. Antioxidative activity of the synthesized dyes has been chemically tested and two derivatives (hydroxy and methoxy) are qualified as promising antioxidant molecules.
PB  - Elsevier Sci Ltd, Oxford
T2  - Dyes and Pigments
T1  - Role of the bifurcated intramolecular hydrogen bond on the physicochemical profile of the novel azo pyridone dyes
EP  - 572
SP  - 562
VL  - 162
DO  - 10.1016/j.dyepig.2018.10.058
ER  - 

@article{
author = "Lađarević, Jelena and Božić, Bojan and Matović, Luka and Božić-Nedeljković, Biljana and Mijin, Dušan",
year = "2019",
abstract = "A series of novel 5-(4-substituted phenylazo)-1-carboxymethyl-3-cyano-6-hydroxy-4-methyl-2-pyridones had been synthesized and characterized. The study includes spectral determination of the possible tautomeric forms and the intramolecular hydrogen bonding pattern. The influence of the bifurcated intramolecular hydrogen bond on the spectral properties has been discussed. The dyes exist in hydrazone form both solid state and in most of the employed solvents. Equilibrium between hydrazone and anion forms has been studied in N,N-dimethylformamide and N,N-dimethylacetamide. For quantitative elucidation of solvent effects on UV-Vis absorption maxima, a linear solvation energy relationship concept has been employed using Kamlet-Taft's and Catalan's equations. Antioxidative activity of the synthesized dyes has been chemically tested and two derivatives (hydroxy and methoxy) are qualified as promising antioxidant molecules.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Dyes and Pigments",
title = "Role of the bifurcated intramolecular hydrogen bond on the physicochemical profile of the novel azo pyridone dyes",
pages = "572-562",
volume = "162",
doi = "10.1016/j.dyepig.2018.10.058"
}

Lađarević, J., Božić, B., Matović, L., Božić-Nedeljković, B.,& Mijin, D.. (2019). Role of the bifurcated intramolecular hydrogen bond on the physicochemical profile of the novel azo pyridone dyes. in Dyes and Pigments
Elsevier Sci Ltd, Oxford., 162, 562-572.
https://doi.org/10.1016/j.dyepig.2018.10.058

Lađarević J, Božić B, Matović L, Božić-Nedeljković B, Mijin D. Role of the bifurcated intramolecular hydrogen bond on the physicochemical profile of the novel azo pyridone dyes. in Dyes and Pigments. 2019;162:562-572.
doi:10.1016/j.dyepig.2018.10.058 .

Lađarević, Jelena, Božić, Bojan, Matović, Luka, Božić-Nedeljković, Biljana, Mijin, Dušan, "Role of the bifurcated intramolecular hydrogen bond on the physicochemical profile of the novel azo pyridone dyes" in Dyes and Pigments, 162 (2019):562-572,
https://doi.org/10.1016/j.dyepig.2018.10.058 . .

TY  - JOUR
AU  - Lazić, Anita M.
AU  - Radovanović, Lidija D.
AU  - Božić, Bojan Đ.
AU  - Božić Nedeljković, Biljana Đ.
AU  - Vitnik, Vesna D.
AU  - Vitnik, Željko J.
AU  - Rogan, Jelena R.
AU  - Valentić, Nataša V.
AU  - Ušćumlić, Gordana S.
AU  - Trišović, Nemanja P.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4324
AB  - Two series of cycloalkanespiro-5-hydantoins, namely cyclo-hexanespiro-5-hydantoins and cycloheptanespiro-5-hydantoins with a 4-substituted benzyl or a 2-(4-substituted phenyl)-2-oxoethyl group at N3 position, were synthesized and their effects on proliferation of human colon (HCT-116), leukemia (K562) and breast (MDA-MB-231) cancer cell lines were tested. For comparison, we also described the 5,5-diphenylhydantoin analogues. The structural features of the investigated compounds were characterized by elemental analysis, FT-IR, UV-Vis, H-1 and C-13 NMR spectroscopy and X-ray crystallography. Regarding their structure-activity relationships, it was shown that the substitution on the benzyl moiety with the methoxy, chloro or bromo group potentiated the antiproliferative activity relative to the parent compounds, while an increase in the size of the cycloalkyl group resulted mostly in a decrease of the antiproliferative activity. The single crystal X-ray analysis revealed the existence of dimers and chains formed by the N-H center dot center dot center dot center dot O hydrogen bonds. The analysis of the molecular descriptors of Lipinski demonstrated that all investigated compounds obeyed the rule of five. To further understand their geometry and electronic structure, OFT calculations with B3LYP method using 6-311++G(d,p) basic set were performed. In this context, the UV-Vis spectra of the investigated compounds were analyzed in detail, whereby the predicted absorption spectra from DFT calculation matched the experimentally obtained ones, with a good correlation. The interesting physico-chemical and pharmacologically relevant properties of the investigated compounds warrant their further investigation.
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of Molecular Structure
T1  - Synthesis, structural characterization, DFT calculations and antiproliferative evaluation of novel spirohydantoin derivatives containing a substituted benzyl moiety
EP  - 62
SP  - 48
VL  - 1180
DO  - 10.1016/j.molstruc.2018.11.071
ER  - 

@article{
author = "Lazić, Anita M. and Radovanović, Lidija D. and Božić, Bojan Đ. and Božić Nedeljković, Biljana Đ. and Vitnik, Vesna D. and Vitnik, Željko J. and Rogan, Jelena R. and Valentić, Nataša V. and Ušćumlić, Gordana S. and Trišović, Nemanja P.",
year = "2019",
abstract = "Two series of cycloalkanespiro-5-hydantoins, namely cyclo-hexanespiro-5-hydantoins and cycloheptanespiro-5-hydantoins with a 4-substituted benzyl or a 2-(4-substituted phenyl)-2-oxoethyl group at N3 position, were synthesized and their effects on proliferation of human colon (HCT-116), leukemia (K562) and breast (MDA-MB-231) cancer cell lines were tested. For comparison, we also described the 5,5-diphenylhydantoin analogues. The structural features of the investigated compounds were characterized by elemental analysis, FT-IR, UV-Vis, H-1 and C-13 NMR spectroscopy and X-ray crystallography. Regarding their structure-activity relationships, it was shown that the substitution on the benzyl moiety with the methoxy, chloro or bromo group potentiated the antiproliferative activity relative to the parent compounds, while an increase in the size of the cycloalkyl group resulted mostly in a decrease of the antiproliferative activity. The single crystal X-ray analysis revealed the existence of dimers and chains formed by the N-H center dot center dot center dot center dot O hydrogen bonds. The analysis of the molecular descriptors of Lipinski demonstrated that all investigated compounds obeyed the rule of five. To further understand their geometry and electronic structure, OFT calculations with B3LYP method using 6-311++G(d,p) basic set were performed. In this context, the UV-Vis spectra of the investigated compounds were analyzed in detail, whereby the predicted absorption spectra from DFT calculation matched the experimentally obtained ones, with a good correlation. The interesting physico-chemical and pharmacologically relevant properties of the investigated compounds warrant their further investigation.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of Molecular Structure",
title = "Synthesis, structural characterization, DFT calculations and antiproliferative evaluation of novel spirohydantoin derivatives containing a substituted benzyl moiety",
pages = "62-48",
volume = "1180",
doi = "10.1016/j.molstruc.2018.11.071"
}

Lazić, A. M., Radovanović, L. D., Božić, B. Đ., Božić Nedeljković, B. Đ., Vitnik, V. D., Vitnik, Ž. J., Rogan, J. R., Valentić, N. V., Ušćumlić, G. S.,& Trišović, N. P.. (2019). Synthesis, structural characterization, DFT calculations and antiproliferative evaluation of novel spirohydantoin derivatives containing a substituted benzyl moiety. in Journal of Molecular Structure
Elsevier Science Bv, Amsterdam., 1180, 48-62.
https://doi.org/10.1016/j.molstruc.2018.11.071

Lazić AM, Radovanović LD, Božić BĐ, Božić Nedeljković BĐ, Vitnik VD, Vitnik ŽJ, Rogan JR, Valentić NV, Ušćumlić GS, Trišović NP. Synthesis, structural characterization, DFT calculations and antiproliferative evaluation of novel spirohydantoin derivatives containing a substituted benzyl moiety. in Journal of Molecular Structure. 2019;1180:48-62.
doi:10.1016/j.molstruc.2018.11.071 .

Lazić, Anita M., Radovanović, Lidija D., Božić, Bojan Đ., Božić Nedeljković, Biljana Đ., Vitnik, Vesna D., Vitnik, Željko J., Rogan, Jelena R., Valentić, Nataša V., Ušćumlić, Gordana S., Trišović, Nemanja P., "Synthesis, structural characterization, DFT calculations and antiproliferative evaluation of novel spirohydantoin derivatives containing a substituted benzyl moiety" in Journal of Molecular Structure, 1180 (2019):48-62,
https://doi.org/10.1016/j.molstruc.2018.11.071 . .

TY  - CONF
AU  - Lađarević, Jelena
AU  - Radovanović, Lidija
AU  - Božić, Bojan
AU  - Mašulović, Aleksandra
AU  - Rogan, Jelena
AU  - Mijin, Dušan
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6704
AB  - Heterociklične azo boje koje u svojoj strukturi imaju piridonsko jezgro pokazale su se
kao efikasni helatni ligandi pri formiranju bakаr(II)-kompleksa [1]. Kompleksi azo
piridonskih boja primenjuju se u optičkim slojevima za snimanje i karakterišu se dobrom
stabilnošću na uticaj svetlosti i povišene temperature [2]. Azo-hidrazon tautomerija
predstavlja značajan fenomen pri kompleksiranju ovih boja sa jonima prelaznih metala,
zbog transformacije hidrazonskog mosta u bojama u azo-vezu u kompleksu.
Reakcijom 5-(4-hlorfenilazo)-1-etil-3-
cijanо-6-hidroksi-4-metil-2-piridona
(HL) i Cu(CH3COO)2ꞏH2O rastvorenog u
N,N-dimetilformamidu (DMF) na sobnoj
temperaturi, sintetisan je kompleks
[CuL2(DMF)]ꞏDMF. Kompleks je
okarakterisan UV-Vis i ATR-FTIR
spektroskopijom, simultanom TG/DSC- i
rendgenskom strukturnom analizom.
Asimetričnu jedinicu kompleksa čine
Cu(II)-atom, dva helatna L-liganda, jedan
koordiniran i jedan nekoordiniran
molekul DMF (slika 1). Kvadratnopiramidalno okruženje Cu(II)-atoma čine
dva O-atoma i dva N-atoma iz dva
molekula L-liganda i O-atom iz
koordiniranog molekula DMF. Stabilizacija kristalne strukture postignuta je slabim
nekovalentnim interakcijama: C–HꞏꞏꞏO/N, π–π, C–Hꞏꞏꞏπ, slobodan elektronski par–π i
ClꞏꞏꞏCl.
Kristalografski podaci: C36H38N10O6Cl2Cu, Mr = 841,20, trikliničan sistem, prostorna
grupa P , a = 10,109(5), b = 11,753(6), c = 17,447(8) Å, α = 74,152(4), β = 85,600(4),
γ = 77,357(4) °, V = 1945,41(17) Å3
, R1 = 0,059 za 5929 refleksija sa I  2σ(I).
AB  - Heterocyclic azo dyes bearing pyridone ring as a coupling constituent are recognized
as efficient chelating agents for copper(II) [1]. Complexes of azo pyridone dyes find
application in optical recording layers with improved light stability and are characterized
by good thermal and light stability [2]. Azo-hydrazone tautomerism of these dyes is
evidenced as the significant phenomenon in their coordination since hydrazone bridge in
dyes transforms to azo bond upon complexation.
In the reaction of
5-(4-chlorophenylazo)-1-ethyl-3-cyano6-hydroxy-4-methyl-2-pyridone (HL)
with Cu(CH3COO)2ꞏH2O in N,Ndimethylformamide (DMF) at room
temperature, a complex
[CuL2(DMF)]ꞏDMF has been prepared.
The complex is characterized by UV-Vis
and ATR-FTIR spectroscopy,
simultaneous TG/DSC and single-crystal
X-ray analysis.
The asymmetric unit of the complex
is comprised of one Cu(II) atom, two
chelate L ligands, one coordinated and
one noncoordinated DMF molecule
(Figure 1). Cu(II) atom is surrounded by
two O and two N atoms from two L ligands and by one O atom from coordinated DMF,
forming a square pyramidal environment. The stabilization of the crystal packing is
achieved by weak non-covalent interactions: C–HꞏꞏꞏO/N, π–π, C–Hꞏꞏꞏπ, lone pair–π and
ClꞏꞏꞏCl.
Crystal data: C36H38N10O6Cl2Cu, Mr = 841.20, triclinic, space group P ,
a = 10.109(5), b = 11.753(6), c = 17.447(8) Å, α = 74.152(4), β = 85.600(4),
γ = 77.357(4) °, V = 1945.41(17) Å3
, R1 = 0.059 for 5929 observed reflections with
I  2σ(I).
PB  - Beograd : Srpsko kristalografsko društvo
C3  - Izvodi radova / XXVI konferencija Srpskog kristalografskog društva, Srebrno jezero, 27–28. jun 2019
T1  - KRISTALNA STRUKTURA, SPEKTRALNA I TERMALNA SVOJSTVA Cu(II)-KOMPLEKSA AZO PIRIDONSKE BOJE
T1  - CRYSTAL STRUCTURE, SPECTRAL AND THERMAL PROPERTIES OF Cu(II) COMPLEX OF AZO PYRIDONE DYE
EP  - 49
SP  - 48
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6704
ER  - 

@conference{
author = "Lađarević, Jelena and Radovanović, Lidija and Božić, Bojan and Mašulović, Aleksandra and Rogan, Jelena and Mijin, Dušan",
year = "2019",
abstract = "Heterociklične azo boje koje u svojoj strukturi imaju piridonsko jezgro pokazale su se
kao efikasni helatni ligandi pri formiranju bakаr(II)-kompleksa [1]. Kompleksi azo
piridonskih boja primenjuju se u optičkim slojevima za snimanje i karakterišu se dobrom
stabilnošću na uticaj svetlosti i povišene temperature [2]. Azo-hidrazon tautomerija
predstavlja značajan fenomen pri kompleksiranju ovih boja sa jonima prelaznih metala,
zbog transformacije hidrazonskog mosta u bojama u azo-vezu u kompleksu.
Reakcijom 5-(4-hlorfenilazo)-1-etil-3-
cijanо-6-hidroksi-4-metil-2-piridona
(HL) i Cu(CH3COO)2ꞏH2O rastvorenog u
N,N-dimetilformamidu (DMF) na sobnoj
temperaturi, sintetisan je kompleks
[CuL2(DMF)]ꞏDMF. Kompleks je
okarakterisan UV-Vis i ATR-FTIR
spektroskopijom, simultanom TG/DSC- i
rendgenskom strukturnom analizom.
Asimetričnu jedinicu kompleksa čine
Cu(II)-atom, dva helatna L-liganda, jedan
koordiniran i jedan nekoordiniran
molekul DMF (slika 1). Kvadratnopiramidalno okruženje Cu(II)-atoma čine
dva O-atoma i dva N-atoma iz dva
molekula L-liganda i O-atom iz
koordiniranog molekula DMF. Stabilizacija kristalne strukture postignuta je slabim
nekovalentnim interakcijama: C–HꞏꞏꞏO/N, π–π, C–Hꞏꞏꞏπ, slobodan elektronski par–π i
ClꞏꞏꞏCl.
Kristalografski podaci: C36H38N10O6Cl2Cu, Mr = 841,20, trikliničan sistem, prostorna
grupa P , a = 10,109(5), b = 11,753(6), c = 17,447(8) Å, α = 74,152(4), β = 85,600(4),
γ = 77,357(4) °, V = 1945,41(17) Å3
, R1 = 0,059 za 5929 refleksija sa I  2σ(I)., Heterocyclic azo dyes bearing pyridone ring as a coupling constituent are recognized
as efficient chelating agents for copper(II) [1]. Complexes of azo pyridone dyes find
application in optical recording layers with improved light stability and are characterized
by good thermal and light stability [2]. Azo-hydrazone tautomerism of these dyes is
evidenced as the significant phenomenon in their coordination since hydrazone bridge in
dyes transforms to azo bond upon complexation.
In the reaction of
5-(4-chlorophenylazo)-1-ethyl-3-cyano6-hydroxy-4-methyl-2-pyridone (HL)
with Cu(CH3COO)2ꞏH2O in N,Ndimethylformamide (DMF) at room
temperature, a complex
[CuL2(DMF)]ꞏDMF has been prepared.
The complex is characterized by UV-Vis
and ATR-FTIR spectroscopy,
simultaneous TG/DSC and single-crystal
X-ray analysis.
The asymmetric unit of the complex
is comprised of one Cu(II) atom, two
chelate L ligands, one coordinated and
one noncoordinated DMF molecule
(Figure 1). Cu(II) atom is surrounded by
two O and two N atoms from two L ligands and by one O atom from coordinated DMF,
forming a square pyramidal environment. The stabilization of the crystal packing is
achieved by weak non-covalent interactions: C–HꞏꞏꞏO/N, π–π, C–Hꞏꞏꞏπ, lone pair–π and
ClꞏꞏꞏCl.
Crystal data: C36H38N10O6Cl2Cu, Mr = 841.20, triclinic, space group P ,
a = 10.109(5), b = 11.753(6), c = 17.447(8) Å, α = 74.152(4), β = 85.600(4),
γ = 77.357(4) °, V = 1945.41(17) Å3
, R1 = 0.059 for 5929 observed reflections with
I  2σ(I).",
publisher = "Beograd : Srpsko kristalografsko društvo",
journal = "Izvodi radova / XXVI konferencija Srpskog kristalografskog društva, Srebrno jezero, 27–28. jun 2019",
title = "KRISTALNA STRUKTURA, SPEKTRALNA I TERMALNA SVOJSTVA Cu(II)-KOMPLEKSA AZO PIRIDONSKE BOJE, CRYSTAL STRUCTURE, SPECTRAL AND THERMAL PROPERTIES OF Cu(II) COMPLEX OF AZO PYRIDONE DYE",
pages = "49-48",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6704"
}

Lađarević, J., Radovanović, L., Božić, B., Mašulović, A., Rogan, J.,& Mijin, D.. (2019). KRISTALNA STRUKTURA, SPEKTRALNA I TERMALNA SVOJSTVA Cu(II)-KOMPLEKSA AZO PIRIDONSKE BOJE. in Izvodi radova / XXVI konferencija Srpskog kristalografskog društva, Srebrno jezero, 27–28. jun 2019
Beograd : Srpsko kristalografsko društvo., 48-49.
https://hdl.handle.net/21.15107/rcub_technorep_6704

Lađarević J, Radovanović L, Božić B, Mašulović A, Rogan J, Mijin D. KRISTALNA STRUKTURA, SPEKTRALNA I TERMALNA SVOJSTVA Cu(II)-KOMPLEKSA AZO PIRIDONSKE BOJE. in Izvodi radova / XXVI konferencija Srpskog kristalografskog društva, Srebrno jezero, 27–28. jun 2019. 2019;:48-49.
https://hdl.handle.net/21.15107/rcub_technorep_6704 .

Lađarević, Jelena, Radovanović, Lidija, Božić, Bojan, Mašulović, Aleksandra, Rogan, Jelena, Mijin, Dušan, "KRISTALNA STRUKTURA, SPEKTRALNA I TERMALNA SVOJSTVA Cu(II)-KOMPLEKSA AZO PIRIDONSKE BOJE" in Izvodi radova / XXVI konferencija Srpskog kristalografskog društva, Srebrno jezero, 27–28. jun 2019 (2019):48-49,
https://hdl.handle.net/21.15107/rcub_technorep_6704 .

TY  - JOUR
AU  - Valentić, Nataša
AU  - Lađarević, Jelena
AU  - Božić, Bojan
AU  - Mijin, Dušan
AU  - Ušćumlić, Gordana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3834
AB  - Eight 5-(4-substituted arylazo)-4-phenyl-6-methyl-3-cyano-2-pyridones were synthesized by reaction of benzoylacetone and arendiazonium salt, followed by condensation with cyanoacetamide. Absorption spectra of all azo pyridone dyes were recorded in twelve protic and aprotic solvents in the range of 200-600 nm. A simple Hammett equation was used to study the effect of the substituents on the absorption spectra of these azo dyes. The solute-solvent interactions were clarified on the basis of linear solvation energy relationships concept proposed by Kamlet and Taft. The results showed that the solvent effects on the absorption spectra of the investigated azo dyes were very complex and strongly dependent on the nature of the substituents on the phenylazo group.
AB  - Osam 5-(4-supstituisanih arilazo)-4-fenil-6-metil-3-cijano-2-piridona je sintetizovano reakcijom benzoilacetona i arendiazonijumove soli, i kondenzacijom nastalog proizvoda sa cijano-acetamidom. Apsorpcioni spektri dobijenih arilazo piridonskih boja su snimljeni u dvanaest protičnih i aprotičnih rastvarača u opsegu od 200-600 nm. Za proučavanje uticaja supstituenata na apsorpcione spektre ispitivanih azo boja korišćena je prosta ametova jednačina. Interakcije rastvorak-rastvarač su razjašnjene na osnovu koncepta linearne korelacije energije solvatacije, koji su predložili Kamlet i Taft. Rezultati pokazuju da su efekti rastvarača na apsorpcione spektre istraženih azo boja veoma kompleksni i jako zavise od prirode supstituenata na fenilazo grupi.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Solvatochromism of 5-(4-substituted arylazo)-4-phenyl-6-methyl-3-cyano-2-pyridones
T1  - Solvatohromizam 5-(4-supstituisanih arilazo)-4-fenil-6-metil-3-cijano-2-piridona
EP  - 125
IS  - 1
SP  - 117
VL  - 59
DO  - 10.5937/ZasMat1801119V
ER  - 

@article{
author = "Valentić, Nataša and Lađarević, Jelena and Božić, Bojan and Mijin, Dušan and Ušćumlić, Gordana",
year = "2018",
abstract = "Eight 5-(4-substituted arylazo)-4-phenyl-6-methyl-3-cyano-2-pyridones were synthesized by reaction of benzoylacetone and arendiazonium salt, followed by condensation with cyanoacetamide. Absorption spectra of all azo pyridone dyes were recorded in twelve protic and aprotic solvents in the range of 200-600 nm. A simple Hammett equation was used to study the effect of the substituents on the absorption spectra of these azo dyes. The solute-solvent interactions were clarified on the basis of linear solvation energy relationships concept proposed by Kamlet and Taft. The results showed that the solvent effects on the absorption spectra of the investigated azo dyes were very complex and strongly dependent on the nature of the substituents on the phenylazo group., Osam 5-(4-supstituisanih arilazo)-4-fenil-6-metil-3-cijano-2-piridona je sintetizovano reakcijom benzoilacetona i arendiazonijumove soli, i kondenzacijom nastalog proizvoda sa cijano-acetamidom. Apsorpcioni spektri dobijenih arilazo piridonskih boja su snimljeni u dvanaest protičnih i aprotičnih rastvarača u opsegu od 200-600 nm. Za proučavanje uticaja supstituenata na apsorpcione spektre ispitivanih azo boja korišćena je prosta ametova jednačina. Interakcije rastvorak-rastvarač su razjašnjene na osnovu koncepta linearne korelacije energije solvatacije, koji su predložili Kamlet i Taft. Rezultati pokazuju da su efekti rastvarača na apsorpcione spektre istraženih azo boja veoma kompleksni i jako zavise od prirode supstituenata na fenilazo grupi.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Solvatochromism of 5-(4-substituted arylazo)-4-phenyl-6-methyl-3-cyano-2-pyridones, Solvatohromizam 5-(4-supstituisanih arilazo)-4-fenil-6-metil-3-cijano-2-piridona",
pages = "125-117",
number = "1",
volume = "59",
doi = "10.5937/ZasMat1801119V"
}

Valentić, N., Lađarević, J., Božić, B., Mijin, D.,& Ušćumlić, G.. (2018). Solvatochromism of 5-(4-substituted arylazo)-4-phenyl-6-methyl-3-cyano-2-pyridones. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 59(1), 117-125.
https://doi.org/10.5937/ZasMat1801119V

Valentić N, Lađarević J, Božić B, Mijin D, Ušćumlić G. Solvatochromism of 5-(4-substituted arylazo)-4-phenyl-6-methyl-3-cyano-2-pyridones. in Zaštita materijala. 2018;59(1):117-125.
doi:10.5937/ZasMat1801119V .

Valentić, Nataša, Lađarević, Jelena, Božić, Bojan, Mijin, Dušan, Ušćumlić, Gordana, "Solvatochromism of 5-(4-substituted arylazo)-4-phenyl-6-methyl-3-cyano-2-pyridones" in Zaštita materijala, 59, no. 1 (2018):117-125,
https://doi.org/10.5937/ZasMat1801119V . .

TY  - JOUR
AU  - Božić, Bojan
AU  - Lović, Jelena
AU  - Banjac, Nebojša
AU  - Vitnik, Željko
AU  - Vitnik, Vesna
AU  - Mijin, Dušan
AU  - Ušćumlić, Gordana
AU  - Avramov-Ivić, Milka
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3871
AB  - A series of succinimide derivatives were studied using the cyclic and square wave voltammetry. Density function theory was used in order to determinate which of the structural parameters influence the electrochemical activity. The quantum chemical calculations of the investigated succinimides were linked with the experimental electrochemical data and used to propose the oxidation mechanism. The most active among studied succinimides is 1,3-diphenylsuccinimide. The results obtained from the cyclic and square wave voltammetry and quantum chemical calculations indicate that the investigated compounds undergo oxidation by irreversible, diffusion controlled process including transfer of 1e(-) and 1 proton. The voltammetric and DFT results signify that the mechanism of electrochemical oxidation of all compounds involve the conversion of carbonyl-methyne-phenyl segment or methylene group in free radical. This conversion proceeds by the loss of one proton one electron process.
PB  - Electrochemical Science Group, Beograd
T2  - International Journal of Electrochemical Science
T1  - Voltammetric and Quantum Investigation of Selected Succinimides
EP  - 4297
IS  - 5
SP  - 4285
VL  - 13
DO  - 10.20964/2018.05.54
ER  - 

@article{
author = "Božić, Bojan and Lović, Jelena and Banjac, Nebojša and Vitnik, Željko and Vitnik, Vesna and Mijin, Dušan and Ušćumlić, Gordana and Avramov-Ivić, Milka",
year = "2018",
abstract = "A series of succinimide derivatives were studied using the cyclic and square wave voltammetry. Density function theory was used in order to determinate which of the structural parameters influence the electrochemical activity. The quantum chemical calculations of the investigated succinimides were linked with the experimental electrochemical data and used to propose the oxidation mechanism. The most active among studied succinimides is 1,3-diphenylsuccinimide. The results obtained from the cyclic and square wave voltammetry and quantum chemical calculations indicate that the investigated compounds undergo oxidation by irreversible, diffusion controlled process including transfer of 1e(-) and 1 proton. The voltammetric and DFT results signify that the mechanism of electrochemical oxidation of all compounds involve the conversion of carbonyl-methyne-phenyl segment or methylene group in free radical. This conversion proceeds by the loss of one proton one electron process.",
publisher = "Electrochemical Science Group, Beograd",
journal = "International Journal of Electrochemical Science",
title = "Voltammetric and Quantum Investigation of Selected Succinimides",
pages = "4297-4285",
number = "5",
volume = "13",
doi = "10.20964/2018.05.54"
}

Božić, B., Lović, J., Banjac, N., Vitnik, Ž., Vitnik, V., Mijin, D., Ušćumlić, G.,& Avramov-Ivić, M.. (2018). Voltammetric and Quantum Investigation of Selected Succinimides. in International Journal of Electrochemical Science
Electrochemical Science Group, Beograd., 13(5), 4285-4297.
https://doi.org/10.20964/2018.05.54

Božić B, Lović J, Banjac N, Vitnik Ž, Vitnik V, Mijin D, Ušćumlić G, Avramov-Ivić M. Voltammetric and Quantum Investigation of Selected Succinimides. in International Journal of Electrochemical Science. 2018;13(5):4285-4297.
doi:10.20964/2018.05.54 .

Božić, Bojan, Lović, Jelena, Banjac, Nebojša, Vitnik, Željko, Vitnik, Vesna, Mijin, Dušan, Ušćumlić, Gordana, Avramov-Ivić, Milka, "Voltammetric and Quantum Investigation of Selected Succinimides" in International Journal of Electrochemical Science, 13, no. 5 (2018):4285-4297,
https://doi.org/10.20964/2018.05.54 . .

TY  - JOUR
AU  - Mijin, Dušan
AU  - Božić, Bojan
AU  - Lađarević, Jelena
AU  - Matović, Luka
AU  - Ušćumlić, Gordana
AU  - Vitnik, Vesna
AU  - Vitnik, Željko
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3945
AB  - Disazo pyridone dye, 4-methyl-2,6-dioxo-5-(2-(4-(phenyldiazenyl)phenyl)hydrazono)-1,2,5,6-tetrahydropyridine-3-carbonitrile, is synthesised and thoroughly characterised by a combination of experimental and computational approaches. Fourier Transform-infrared and nuclear magnetic resonance (NMR) spectra prove the existence of the hydrazone form in the solid state and in dimethyl sulphoxide, which is also supported by vibrational and NMR theoretical studies. Ultraviolet (UV) spectral properties, as well as solvatochromism in 19 solvents of different polarity, are investigated. In most of the solvents, the dye is solely present in the hydrazone form, whereas in certain solvents, an acid-base equilibrium exists. Excellent agreement between computational and experimental UV-visible data was established. Frontier Molecular Orbital analysis was performed and proved the existence of intramolecular charge transfer through the dye molecule. A molecular electrostatic potential surface was plotted over the optimised geometry to lighten the reactivity of the investigated molecule.
PB  - Wiley, Hoboken
T2  - Coloration Technology
T1  - Solvatochromism and quantum mechanical investigation of disazo pyridone dye
EP  - 490
IS  - 6
SP  - 478
VL  - 134
DO  - 10.1111/cote.12369
ER  - 

@article{
author = "Mijin, Dušan and Božić, Bojan and Lađarević, Jelena and Matović, Luka and Ušćumlić, Gordana and Vitnik, Vesna and Vitnik, Željko",
year = "2018",
abstract = "Disazo pyridone dye, 4-methyl-2,6-dioxo-5-(2-(4-(phenyldiazenyl)phenyl)hydrazono)-1,2,5,6-tetrahydropyridine-3-carbonitrile, is synthesised and thoroughly characterised by a combination of experimental and computational approaches. Fourier Transform-infrared and nuclear magnetic resonance (NMR) spectra prove the existence of the hydrazone form in the solid state and in dimethyl sulphoxide, which is also supported by vibrational and NMR theoretical studies. Ultraviolet (UV) spectral properties, as well as solvatochromism in 19 solvents of different polarity, are investigated. In most of the solvents, the dye is solely present in the hydrazone form, whereas in certain solvents, an acid-base equilibrium exists. Excellent agreement between computational and experimental UV-visible data was established. Frontier Molecular Orbital analysis was performed and proved the existence of intramolecular charge transfer through the dye molecule. A molecular electrostatic potential surface was plotted over the optimised geometry to lighten the reactivity of the investigated molecule.",
publisher = "Wiley, Hoboken",
journal = "Coloration Technology",
title = "Solvatochromism and quantum mechanical investigation of disazo pyridone dye",
pages = "490-478",
number = "6",
volume = "134",
doi = "10.1111/cote.12369"
}

Mijin, D., Božić, B., Lađarević, J., Matović, L., Ušćumlić, G., Vitnik, V.,& Vitnik, Ž.. (2018). Solvatochromism and quantum mechanical investigation of disazo pyridone dye. in Coloration Technology
Wiley, Hoboken., 134(6), 478-490.
https://doi.org/10.1111/cote.12369

Mijin D, Božić B, Lađarević J, Matović L, Ušćumlić G, Vitnik V, Vitnik Ž. Solvatochromism and quantum mechanical investigation of disazo pyridone dye. in Coloration Technology. 2018;134(6):478-490.
doi:10.1111/cote.12369 .

Mijin, Dušan, Božić, Bojan, Lađarević, Jelena, Matović, Luka, Ušćumlić, Gordana, Vitnik, Vesna, Vitnik, Željko, "Solvatochromism and quantum mechanical investigation of disazo pyridone dye" in Coloration Technology, 134, no. 6 (2018):478-490,
https://doi.org/10.1111/cote.12369 . .

TY  - JOUR
AU  - Mirković, Jelena
AU  - Božić, Bojan
AU  - Vitnik, Vesna
AU  - Vitnik, Željko
AU  - Rogan, Jelena
AU  - Poleti, Dejan
AU  - Ušćumlić, Gordana
AU  - Mijin, Dušan
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3972
AB  - Ten 5-(substituted phenylazo)-3-cyano-1-ethyl-6-hydroxy-4-methyl-2-pyridones were studied (five new compounds) to provide insight into the electronic effects of diverse substituents located at different positions in their phenyl moieties. The structural features of these dyes were examined by combining experimental and theoretical approaches. The crystal structures of two derivatives were revealed by X-ray crystallography and diverse packing modes owing to different intermolecular interactions (- stacking and lone pair- interactions, as well as hydrogen bonds) were found. A study on lattice energy and energy related to the molecular pairs obtained from their crystal packing was performed. The tautomerism and ionisation of the dyes in ethanol or N,N -dimethylformamide solution were rationalised in terms of diazo component substitution pattern.
PB  - Wiley, Hoboken
T2  - Coloration Technology
T1  - Structural, spectroscopic and computational study of 5-(substituted phenylazo)-3-cyano-1-ethyl-6-hydroxy-4-methyl-2-pyridones
EP  - 43
IS  - 1
SP  - 33
VL  - 134
DO  - 10.1111/cote.12321
ER  - 

@article{
author = "Mirković, Jelena and Božić, Bojan and Vitnik, Vesna and Vitnik, Željko and Rogan, Jelena and Poleti, Dejan and Ušćumlić, Gordana and Mijin, Dušan",
year = "2018",
abstract = "Ten 5-(substituted phenylazo)-3-cyano-1-ethyl-6-hydroxy-4-methyl-2-pyridones were studied (five new compounds) to provide insight into the electronic effects of diverse substituents located at different positions in their phenyl moieties. The structural features of these dyes were examined by combining experimental and theoretical approaches. The crystal structures of two derivatives were revealed by X-ray crystallography and diverse packing modes owing to different intermolecular interactions (- stacking and lone pair- interactions, as well as hydrogen bonds) were found. A study on lattice energy and energy related to the molecular pairs obtained from their crystal packing was performed. The tautomerism and ionisation of the dyes in ethanol or N,N -dimethylformamide solution were rationalised in terms of diazo component substitution pattern.",
publisher = "Wiley, Hoboken",
journal = "Coloration Technology",
title = "Structural, spectroscopic and computational study of 5-(substituted phenylazo)-3-cyano-1-ethyl-6-hydroxy-4-methyl-2-pyridones",
pages = "43-33",
number = "1",
volume = "134",
doi = "10.1111/cote.12321"
}

Mirković, J., Božić, B., Vitnik, V., Vitnik, Ž., Rogan, J., Poleti, D., Ušćumlić, G.,& Mijin, D.. (2018). Structural, spectroscopic and computational study of 5-(substituted phenylazo)-3-cyano-1-ethyl-6-hydroxy-4-methyl-2-pyridones. in Coloration Technology
Wiley, Hoboken., 134(1), 33-43.
https://doi.org/10.1111/cote.12321

Mirković J, Božić B, Vitnik V, Vitnik Ž, Rogan J, Poleti D, Ušćumlić G, Mijin D. Structural, spectroscopic and computational study of 5-(substituted phenylazo)-3-cyano-1-ethyl-6-hydroxy-4-methyl-2-pyridones. in Coloration Technology. 2018;134(1):33-43.
doi:10.1111/cote.12321 .

Mirković, Jelena, Božić, Bojan, Vitnik, Vesna, Vitnik, Željko, Rogan, Jelena, Poleti, Dejan, Ušćumlić, Gordana, Mijin, Dušan, "Structural, spectroscopic and computational study of 5-(substituted phenylazo)-3-cyano-1-ethyl-6-hydroxy-4-methyl-2-pyridones" in Coloration Technology, 134, no. 1 (2018):33-43,
https://doi.org/10.1111/cote.12321 . .

TY  - JOUR
AU  - Babić, Marija
AU  - Božić, Bojan
AU  - Božić, Biljana
AU  - Ušćumlić, Gordana
AU  - Tomić, Simonida
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3979
AB  - The discovery of novel biodegradable biomaterials able to support and control cellular activity as well as development of an enhanced and efficient method for their fabrication, are of paramount importance in the field of tissue engineering. This study highlights the design of novel degradable hydrogels based on gelatin and hydroxyethyl (meth)acrylates using the innovative combined two-step sequential microwave-assisted and UV photo-polymerization technique. Chemical composition, morphology, swelling capacity and degradation rate of the synthesized hydrogels were evaluated by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), swelling and weight loss measurements. As an initial step for evaluation of performance of the hydrogels in the biological environment, the in vitro biocompatibility of these hydrogels, was evaluated using L929 mouse fibroblasts. Obtained results demonstrated that the hydrogels possess a porous morphology with interconnected pores, 50% in vitro degradation after 7 months, and satisfied biocompatibility on L929 fibroblast cells. These unique performances of the hydrogels make them promising candidates for in vivo evaluation in clinical studies aiming at tissue regeneration.
PB  - Elsevier Science Bv, Amsterdam
T2  - Materials Letters
T1  - The innovative combined microwave-assisted and photo-polymerization technique for synthesis of the novel degradable hydroxyethyl (meth)acrylate/gelatin based scaffolds
EP  - 240
SP  - 236
VL  - 213
DO  - 10.1016/j.matlet.2017.11.087
ER  - 

@article{
author = "Babić, Marija and Božić, Bojan and Božić, Biljana and Ušćumlić, Gordana and Tomić, Simonida",
year = "2018",
abstract = "The discovery of novel biodegradable biomaterials able to support and control cellular activity as well as development of an enhanced and efficient method for their fabrication, are of paramount importance in the field of tissue engineering. This study highlights the design of novel degradable hydrogels based on gelatin and hydroxyethyl (meth)acrylates using the innovative combined two-step sequential microwave-assisted and UV photo-polymerization technique. Chemical composition, morphology, swelling capacity and degradation rate of the synthesized hydrogels were evaluated by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), swelling and weight loss measurements. As an initial step for evaluation of performance of the hydrogels in the biological environment, the in vitro biocompatibility of these hydrogels, was evaluated using L929 mouse fibroblasts. Obtained results demonstrated that the hydrogels possess a porous morphology with interconnected pores, 50% in vitro degradation after 7 months, and satisfied biocompatibility on L929 fibroblast cells. These unique performances of the hydrogels make them promising candidates for in vivo evaluation in clinical studies aiming at tissue regeneration.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Materials Letters",
title = "The innovative combined microwave-assisted and photo-polymerization technique for synthesis of the novel degradable hydroxyethyl (meth)acrylate/gelatin based scaffolds",
pages = "240-236",
volume = "213",
doi = "10.1016/j.matlet.2017.11.087"
}

Babić, M., Božić, B., Božić, B., Ušćumlić, G.,& Tomić, S.. (2018). The innovative combined microwave-assisted and photo-polymerization technique for synthesis of the novel degradable hydroxyethyl (meth)acrylate/gelatin based scaffolds. in Materials Letters
Elsevier Science Bv, Amsterdam., 213, 236-240.
https://doi.org/10.1016/j.matlet.2017.11.087

Babić M, Božić B, Božić B, Ušćumlić G, Tomić S. The innovative combined microwave-assisted and photo-polymerization technique for synthesis of the novel degradable hydroxyethyl (meth)acrylate/gelatin based scaffolds. in Materials Letters. 2018;213:236-240.
doi:10.1016/j.matlet.2017.11.087 .

Babić, Marija, Božić, Bojan, Božić, Biljana, Ušćumlić, Gordana, Tomić, Simonida, "The innovative combined microwave-assisted and photo-polymerization technique for synthesis of the novel degradable hydroxyethyl (meth)acrylate/gelatin based scaffolds" in Materials Letters, 213 (2018):236-240,
https://doi.org/10.1016/j.matlet.2017.11.087 . .